Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
yang mind » yang cindy, yang jin, sang minh
yang yao » wang yan, yang yi, yang fan
than bad » than bau, than a, than big
fan data » can data, dan data, loan data
mind how » aid how
how hai » how has, how ai, how hci

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: dong ((yang yao) OR (yang yang)) ((than bad) OR (fan data)) yang mind how hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((yang yao) OR (yang yang)) ((than bad) or (fan data)) yang mind how hai ;~".
• Adding a wildcard symbol may retrieve word variants: dong ((yang yao) OR (yang yang)) ((than bad) or (fan data)) yang mind how hai ;*.