Perhaps you should try some spelling variations:
chang weng » chan eng, chang won, huang weng
chin chang » china chang, chain change, china zhang
yang yang » wang yang, wang yan
yan guan » gan guan, yan yuan, yang guang
lin chin » lin chih, lin chun, chin chin
dong wei » wang wei, dong di, dong hoi
wang » wing, wan, lang

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 ((yan guan) OR (yang yang)) lin chin chang weng ((dong sin) OR (dong wei)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yan guan) or (yang yang)) lin chin chang weng ((dong sin) or (dong wei)) ;*.