FYI I have updated the search on Cljdoc to use "and" instead of "or" between all tokens of the query so it will give better results (unless you overspecify / provide include something that has no match). See https://github.com/cljdoc/cljdoc/pull/315 for details. Let me know via https://github.com/cljdoc/cljdoc/issues/308 if you find any issues. Thanks!
FYI if you remove and re-add Cljdoc as a search engine in you browser, it should now supply completion suggestions. Details: https://github.com/cljdoc/cljdoc/pull/316