Perhaps you should try some spelling variations:
lang yang » wang yang, lang lang, ylang ylang
yang yang » wang yang, wang yan
john song » john bonn, john ngosong
john wong » john bonn
liu yang » liu yan, du yang, liu feng
yang li » yang lin, yang di, yang xi
li yang » li ying, li gang, li wang

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: lang yang yang li ((li yang) OR (liu yang)) ((john song) OR (john wong)) sau ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yang yang li ((li yang) or (liu yang)) ((john song) OR (john wong)) sau ;~".
• Adding a wildcard symbol may retrieve word variants: lang yang yang li ((li yang) or (liu yang)) ((john song) OR (john wong)) sau ;*.