A method for an optimized search service comprising a search engine, two search indexes and a search term suggestion service may be provided. The method comprises collecting search queries, search results and search term suggestions, determining an acceptance rate value for each search term suggestion for the two search indexes, determining a first search configuration of a first index having an acceptance rate value below a first threshold value, determining a second search configuration of a second index including parameters for controlling search term suggestions for at least one search index having an acceptance rate value above a second threshold value, and having a search configuration that is compatible according to a compatibility value to the first search configuration, wherein the first index and the second index have similar content, and copying a selected set of parameters of the configuration of the second search index into the first index.