A computer-implemented system and method combine a plurality of search indexes of a search service. The method may comprise determining a resource utilization indicator value for two or more of the search indexes that correspond to a search body, evaluating the resource utilization indicator values to determine if they exceed a utilization threshold value, and responsive to each of the resource utilization indicator values exceeding the utilization threshold value, merging the two or more search indexes, resulting in a creation of a single search index out of the two or more search indexes while maintaining access rights to content elements relating to the search body.