Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
than days » than daem, than data
loan data » loan rate
yang mind » yang cindy, yang jin, tang min
sang minh » kang minah, anh minh, song min
shang hai » shang kai, dang hai, chang ha
yang ka » yang fan, yang yao

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