Perhaps you should try some spelling variations:
yang cindy » yang mind
dong hoang » hong hong
hoang yao » yang yao, gang yao
cindy how » mind how, city how
than bau » than bad, than a, than you
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.

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