Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
china daun » china data, china den, china due
wang hong » wang yong, wang hyoung, wang lihong
hong than » hong tan, long thanh, hong hai
daun yang » dan yang, du yang, tan yang
jin chang » chin chang, joon chang, ying chang
jin kang » jin kyung, jing fang, jin ying
xi kang » xi zhang

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: wang hong than china daun yang ((xi kang) OR (((jin kang) OR (jin chang)))) hay ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang hong than china daun yang ((xi kang) or (((jin kang) OR (jin chang)))) hay ;~".
• Adding a wildcard symbol may retrieve word variants: wang hong than china daun yang ((xi kang) or (((jin kang) OR (jin chang)))) hay ;*.