Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, chen zheng
yiqian wang » yijiang wang, liqin wang, qian wang
cheng chan » cheung chan, cheng han, chen chuan
ming hong » min hong, ming hung, ming kong
yang hoa » jang ho, mong hoa, yang hui
bang how » banks how, being how, pong how

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: yiqian wang ((yang hoa) OR (bang how)) ((cheng chan) OR (cheng zhang)) ming hong seo ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yiqian wang ((yang hoa) or (bang how)) ((cheng chan) OR (cheng zhang)) ming hong seo ;~".
• Adding a wildcard symbol may retrieve word variants: yiqian wang ((yang hoa) or (bang how)) ((cheng chan) OR (cheng zhang)) ming hong seo ;*.