Perhaps you should try some spelling variations:
smith wang » smith haig
dan smith » adam smith, joan smith, d smith
yang lin » yang jin, yang li, yang liang
wang lin » wang li, wang qin, wang limin
wang hui » wang hua, wang zhi, wang wei
yang xi » yang yi, yang jui
lee dan » lee daten, lee jean, lee alan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yanling ((((yang xi) or (yang di))) or (((yang lin) or (wang lin)))) lee dan smith wang hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yanling ((((yang xi) OR (yang di))) OR (((yang lin) OR (wang lin)))) lee dan smith wang hui ;.
• Adding a wildcard symbol may retrieve word variants: wang yanling ((((yang xi) or (yang di))) or (((yang lin) or (wang lin)))) lee dan smith wang hui ;*.