Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
zhang wei » zhen wei
shang hai » dang hai, chang ha, hong hai
yong yan » yang yang, dong yang, ying yang
yan daun » wan daud, yan kun
yang wei » wang wei, fang wei, liang wei
yan yan » yan yuan, nan yan, yang yang

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 yong yan yan daun ((yang wei) OR (zhang wei)) ((shang hai) OR (shang kai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong yan yan daun ((yang wei) or (zhang wei)) ((shang hai) OR (shang kai)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yong yan yan daun ((yang wei) or (zhang wei)) ((shang hai) OR (shang kai)) ;*.