Perhaps you should try some spelling variations:
nhung doanh » nhung danh, dung doanh, nhung don
thien hieu » thien nhien, thien chien, thien hue
hanh doanh » hang doanh, chinh doanh, doanh doanh
chong cong » cong cong, thong cong, cuong cong
hieu lang » chieu sang, hieu quang, nhieu tang
cua chong » cua cong, cua chung, cua khong
san van » luan van, tran van, dang van
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: thien hieu lang - ((hanh doanh) or (nhung doanh)) cua chong cong ((san van) OR (tan van)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien hieu lang - ((hanh doanh) OR (nhung doanh)) cua chong cong ((san van) OR (tan van)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thien hieu lang - ((hanh doanh) or (nhung doanh)) cua chong cong ((san van) OR (tan van)) tap".
• Adding a wildcard symbol may retrieve word variants: thien hieu lang - ((hanh doanh) or (nhung doanh)) cua chong cong ((san van) OR (tan van)) tap*.