Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
chen chan » chen chuan, cheung chan, chen chung
wong shiu » wong siu, cong shu, song shin
gan guan » yan guan, quan guan, fan guon
yan yuan » yan guan, fang yuan, nan yan
chan eng » chan fong, chan kang, chan ming
eng wong » eng hong, eng seng
yi chen » jui chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan ((((gan guan) or (yang yang))) or (yan yuan)) yi chen chan eng wong shiu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan ((((gan guan) OR (yang yang))) OR (yan yuan)) yi chen chan eng wong shiu ;*.