Perhaps you should try some spelling variations:
wang liang » wang yang
liang sun » liang dan, liang tan, wing sun
zhong tai » hong tan, zhong zhi
can tang » can stand, tang tang, can take
hong hai » shang hai, dang hai, hong tan
wang yue » wong yue, wang hua, wang yan
oil can » oil cake, oil chad, oil coal

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 liang sun oil can tang li ((((hong hai) OR (zhong tai))) OR (wang yue)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang sun oil can tang li ((((hong hai) or (zhong tai))) or (wang yue)) ;*.