Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
shang hai » shang kai, dang hai, chang ha
can data » can tata, dan data, fan data
yang min » yang mind, yang jin, yang lin
tang min » chang min, sang minh, yang mind
yang ka » yang fan, yang yao
than a » than _

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 ka ((than a) OR (can data)) ((yang min) OR (tang min)) shang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang ka ((than a) or (can data)) ((yang min) OR (tang min)) shang hai ;~".
• Adding a wildcard symbol may retrieve word variants: dong yang ka ((than a) or (can data)) ((yang min) OR (tang min)) shang hai ;*.