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
khong cong » thong cong, khong cang, chong cong
hieu lang » chieu sang, hieu quang, nhieu tang
cua khong » hua khong, cua phuong, cua thuong
cong tac » cong ty
han tap » toan tap, nhan tai, nhan tao
han tai » hang tai, nhan tai, van tai

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 khong cong tac ((han tap) OR (han tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien hieu lang - ((hanh doanh) OR (nhung doanh)) cua khong cong tac ((han tap) OR (han tai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thien hieu lang - ((hanh doanh) or (nhung doanh)) cua khong cong tac ((han tap) OR (han tai))".
• Adding a wildcard symbol may retrieve word variants: thien hieu lang - ((hanh doanh) or (nhung doanh)) cua khong cong tac ((han tap) OR (han tai))*.