Tips:

Type mona lisa to finds documents that contain either mona or lisa or any capitalized variant (Mona, MONA, liSA, Lisa). The search results will rank the results to show first the documents containing both words, close together, and near the top of the document.

Check the "+" next to the search logo or type a plus sign to require a word in all results (+swim +workout)

Type "Mona Lisa" to find documents that have the two words capitalized and found right next to
each other. Placing quotation marks around any series of words turns them into a phrase and tells the serach engine that you are only interested in documents that have the words in this specific order.

Type +mona +lisa to finds only documents that contain both words. Be sure there is no space between the plus sign and the word.