Perhaps you should try some spelling variations:
yang cindy » yang mind
dong yang » dong hoang, wang yang, yang yang
cindy how » mind how, city how
yang yao » yang yang, wang yan, yang yi
than bau » than a, than you, than big
than bad » than a, than big, than law
can data » can tata, dan data, fan data
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 ((((than bau) OR (than bad))) OR (can data)) yang cindy how hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang yao ((((than bau) OR (than bad))) or (can data)) yang cindy how hai ;~".
• Adding a wildcard symbol may retrieve word variants: dong yang yao ((((than bau) OR (than bad))) or (can data)) yang cindy how hai ;*.