Perhaps you should try some spelling variations:
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
hoang seo » hong seo, hoang sy
wang lei » wang wei, wang fei, zhang lei
wang li » wang lin, tang li, wang di
yi hua » ya hua, yi hui, ying hua
li hua » li hui, lu hua

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: ((yang yang) OR (wang yang)) ((yi hua) OR (li hua)) rene ((wang lei) OR (wang li)) hoang seo ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (wang yang)) ((yi hua) or (li hua)) rene ((wang lei) OR (wang li)) hoang seo ;~".
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (wang yang)) ((yi hua) or (li hua)) rene ((wang lei) OR (wang li)) hoang seo ;*.