Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
yong yan » yang yang, dong yang, ying yang
di rene » di rete, dr rene, i rene
li hong » le hong, li cong, lim chong
li song » li cong, kim song, jie song
li rong » yi rong, li cong, shi rong
erence » terence, terrence
tang » tan, lang, yang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yong yan ((di rene) or (di erence)) tang ((((li hong) OR (li song))) or (li rong)) yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yong yan ((di rene) OR (di erence)) tang ((((li hong) OR (li song))) OR (li rong)) yu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong yan ((di rene) or (di erence)) tang ((((li hong) OR (li song))) or (li rong)) yu ;".
• Adding a wildcard symbol may retrieve word variants: wang yong yan ((di rene) or (di erence)) tang ((((li hong) OR (li song))) or (li rong)) yu ;*.