Trick for Overriding "Stemming" on Google Scholar

This is a not-very-advanced trick for overriding the "stemming" feature that can sometimes become problematic in searches on google scholar. In some cases, google scholar automatically stems words, such as creatine, to include the word creatinine, and that can give excessive numbers of results. I've seen other examples of search terms that produce that kind of "garbage" in the search results, but I can't think of those terms now. The big secret is to put the single word in quotations. This search gives a lot of junk on creatinine (http://scholar.google.com/scholar?hl=en&q=turnover+export+creatine) and provides 8,640 results, but this search, in which I meant to find articles discussing the mechanisms governing the export of creatine from cells and, hence, the total, intracellular creatine+phosphocreatine pools in cells, gave 3,860 results (http://scholar.google.com/scholar?hl=en&q=turnover+export+%22creatine%22) and less junk.