Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
liang tan » liang dan, liang sun, wing tan
hua rent » hua ren
yang tan » yang fan, yang dean, tang tang
wong yue » wang yue, hong yu
song yun » song byung, chong yun, young yun
yang yi » yang di, yang xi, yang jui

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: dong ((yang yang) OR (yang yi)) hua rent ((yang tan) OR (liang tan)) ((wong yue) OR (song yun)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((yang yang) or (yang yi)) hua rent ((yang tan) OR (liang tan)) ((wong yue) or (song yun)) ;~".
• Adding a wildcard symbol may retrieve word variants: dong ((yang yang) or (yang yi)) hua rent ((yang tan) OR (liang tan)) ((wong yue) or (song yun)) ;*.