The optimization process and recommendations:

1. Avoid Selecting Unnecessary Columns (query line: 55): Avoid selecting all columns with the '*' wildcard, unless you intend to use them all. Selecting redundant columns may result in unnecessary performance degradation.
2. Avoid Subqueries (query line: 29): We advise against using subqueries as they are not optimized well by the optimizer. Therefore, it's recommended to join a newly created temporary table that holds the data, which also includes the relevant search index.
3. Avoid Subqueries (query line: 39): We advise against using subqueries as they are not optimized well by the optimizer. Therefore, it's recommended to join a newly created temporary table that holds the data, which also includes the relevant search index.
4. Avoid Subqueries (query line: 49): We advise against using subqueries as they are not optimized well by the optimizer. Therefore, it's recommended to join a newly created temporary table that holds the data, which also includes the relevant search index.
5. Create Optimal Indexes (modified query below): The recommended indexes are an integral part of this optimization effort and should be created before testing the execution duration of the optimized query.

Optimal indexes for this query:

CREATE INDEX searchbrain_idx_imageid ON SearchBrain (ImageId);
CREATE INDEX searchdetails_idx_imageid ON SearchDetails (Imageid);
CREATE INDEX p2_kwdmgmt_idx_all_kwd ON p2_kwdmgmt (all_kwd);
CREATE INDEX searchcolors_idx_imageid ON searchcolors (Imageid);

The optimized query:

WITH cte AS (SELECT
        ROW_NUMBER() OVER (ORDER 
    BY
        sb.nbofviews DESC) AS ROW,
        sb.ImageId,
        sb.LicenceType,
        sb.ImgCollection,
        sb.nbofviews,
        sb.orientation,
        sb.shootdate,
        sd.ImgName,
        sd.Caption,
        sd.ImgPath,
        sd.ImageType,
        sd.ImgHoverPath,
        sc.image_color 
    FROM
        SearchBrain sb,
        SearchDetails sd,
        searchcolors sc 
    WHERE
        sc.Imageid = sd.Imageid 
        AND sb.ImageId = sd.ImageId 
        AND sd.imageid IN (SELECT
            SearchInitial.ImageId 
        FROM
            SearchInitial 
        WHERE
            SearchInitial.Primarykeyword = (SELECT
                TOP 1 p2_kwdmgmt.Primary_kwd 
            FROM
                p2_kwdmgmt 
            WHERE
                p2_kwdmgmt.all_kwd = 'man') INTERSECT SELECT
                SearchInitial.ImageId 
            FROM
                SearchInitial 
            WHERE
                SearchInitial.Primarykeyword = (SELECT
                    TOP 1 p2_kwdmgmt.Primary_kwd 
                FROM
                    p2_kwdmgmt 
                WHERE
                    p2_kwdmgmt.all_kwd = 'jumping') INTERSECT SELECT
                    SearchInitial.ImageId 
                FROM
                    SearchInitial 
                WHERE
                    SearchInitial.Primarykeyword = (SELECT
                        TOP 1 p2_kwdmgmt.Primary_kwd 
                    FROM
                        p2_kwdmgmt 
                    WHERE
                        p2_kwdmgmt.all_kwd = 'beach'))) SELECT
                    * 
                FROM
                    cte 
                WHERE
                    cte.ROW BETWEEN 0 AND 31