Perhaps you should try some spelling variations:
yang cindy » yang mind
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
cindy how » mind how, city how
than bau » than bad, than a, than you
can data » can tata, dan data, fan data
how ai » how aid, how ae, how am

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 yang ((than bau) OR (can data)) yang cindy how ai ;~.
• Adding a wildcard symbol may retrieve word variants: dong yang yang ((than bau) or (can data)) yang cindy how ai ;*.