Perhaps you should try some spelling variations:
thanh data » than data, thanh dam
dong yang » dong hoang, wang yang, yang yang
van thanh » tran thanh, phan thanh, lam thanh
yang van » yang fan, yang dean, trang van
yang jin » yang jie, yang jun, shang jin
ying jin » jing ji, yang jie
hong hai » shang hai, zhong tai, hong tan

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 van thanh data ((yang jin) OR (ying jin)) ((hong hai) OR (dang hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang van thanh data ((yang jin) OR (ying jin)) ((hong hai) or (dang hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: dong yang van thanh data ((yang jin) OR (ying jin)) ((hong hai) or (dang hai)) ;*.