Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
than daem » than data, than days, than deep
sang minh » kang minah, anh minh, song min
yang fan » zhang fan, yang dean, yang jin
can data » can tata, dan data, fan data
minh how » mind how, minh hoa, myth how
how ai » how aid, how ae, how am

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: yang yang fan ((than daem) OR (can data)) sang minh how ai ;~.
• Adding a wildcard symbol may retrieve word variants: yang yang fan ((than daem) or (can data)) sang minh how ai ;*.