Perhaps you should try some spelling variations:
dong wang » dong yang, hong wang, dong hoang
wang yang » wang yan, wang liang, wang yanling
than daun » than bau, than daem, than days
than data » than death, loan data, can data
yang aid » yang anda, yang mind, yang di
how ai » how aid, how am, how asia
how ae » how age, how am, how case

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 wang yang ((than daun) OR (than data)) yang aid ((how ai) OR (how ae)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong wang yang ((than daun) or (than data)) yang aid ((how ai) OR (how ae)) ;~".
• Adding a wildcard symbol may retrieve word variants: dong wang yang ((than daun) or (than data)) yang aid ((how ai) OR (how ae)) ;*.