Perhaps you should try some spelling variations:
davis test » david west, davis tsu
davis best » david west, davis robert
yan yang » yang yang, yao yang, dan yang
yang kim » yong kim, kang kim, hyung kim
kim dong » kim song, kim jong, kim young
wan yan » wang yan, nan yan, wai yan
wind » wing, find

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan yang ((davis test) OR (davis best)) yang kim dong (sin or wind) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan yang ((davis test) OR (davis best)) yang kim dong (sin OR wind) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan yang ((davis test) OR (davis best)) yang kim dong (sin or wind) ;*".