Perhaps you should try some spelling variations:
david young » david loundy
yang zili » yang li
yang dali » yang di, bang dai, yang all
gene band » gene bank, gene banks, den band
aid young » a young, kim young, all young
wan yang » wang yang, dan yang, tan yang
choi » chi, cho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wan yang ((yang zili) OR (yang dali)) gene band ((aid young) OR (david young)) choi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yang ((yang zili) or (yang dali)) gene band ((aid young) OR (david young)) choi ;~".
• Adding a wildcard symbol may retrieve word variants: wan yang ((yang zili) or (yang dali)) gene band ((aid young) OR (david young)) choi ;*.