Perhaps you should try some spelling variations:
when food » when good
wang lei » wang wei, wang fei, wang li
yang sin » yang jin, yang using, yang jing
yang lin » yang jin, wang lin, yang li
food bad » good bad, food based, food bank
yang jui » yang judy, yang xi
yang yi » yang xi

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: wang lei ((yang sin) OR (yang lin)) when food bad ((yang yi) OR (((yang di) OR (yang jui)))) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang lei ((yang sin) OR (yang lin)) when food bad ((yang yi) or (((yang di) or (yang jui)))) ;~".
• Adding a wildcard symbol may retrieve word variants: wang lei ((yang sin) OR (yang lin)) when food bad ((yang yi) or (((yang di) or (yang jui)))) ;*.