Perhaps you should try some spelling variations:
yiqian wang » yijiang wang, liqin wang, qian wang
yidan wang » qian wang, yan wang, yuan wang
eng chang » ying chang, eng hong
huong zhi » zhong zhi
chan eng » chan fong, chan kang, chan ming
chang ha » chang mae
thi » thin, thai

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yidan wang) or (yiqian wang)) chan eng chang ha ((huong zhi) OR (phuong thi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yidan wang) OR (yiqian wang)) chan eng chang ha ((huong zhi) OR (phuong thi)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yidan wang) or (yiqian wang)) chan eng chang ha ((huong zhi) OR (phuong thi)) ;".
• Adding a wildcard symbol may retrieve word variants: wang ((yidan wang) or (yiqian wang)) chan eng chang ha ((huong zhi) OR (phuong thi)) ;*.