Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
van thanh » tran thanh, phan thanh, lam thanh
thanh dam » than daem, thanh van
amin hong » min hong, among hong, tin hong
dam yang » adam yang, dan yang, awam yang
mind how » aid how

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