Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
cong van » congo can, duong van, cong sun
van than » van thanh, van phan, van ham
yang jui » yang di, yang xi
lang hua » wang hua, wang hui, dong hua
wang wei » zhang wei, wang zhi
yang yi » yang di, yang xi
judy » july

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: cong van than china a ((((yang jui) OR (yang yi))) OR (yang judy)) ((lang hua) OR (wang wei)) ;~.
• Adding a wildcard symbol may retrieve word variants: cong van than china a ((((yang jui) or (yang yi))) or (yang judy)) ((lang hua) or (wang wei)) ;*.