Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
china wen » chia wen, china won, ching wen
yan than » van thanh, yan zhang, yan clan
yang jin » yang jie, yang jun, ying jin
wang lin » wang li, yang lin, wang limin
wang qin » wang qiao, wang jing, wang ning
zong hai » hong hai, dang hai, long han

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 yan than china wen ((((yang jin) OR (wang lin))) OR (wang qin)) zong hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan than china wen ((((yang jin) or (wang lin))) or (wang qin)) zong hai ;*.