Perhaps you should try some spelling variations:
ngua chong » nghia chong, ngu chuong, ngu phong
hanh doanh » hang doanh, chinh doanh, doanh doanh
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
hua chong » hua khong, qua chuong, cua cong
cong san » cong tac
toan tap » toan ban
nhan tai » hang tai, van tai, toan tai

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

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