Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
hanh doanh » hang doanh, chinh doanh, doanh doanh
chau tinh » cuu tinh, ha tinh, cua tinh
nhan tong » nhan trong, nhan thong, nhan tuong
tong cong » trong cong, cong cong, dung cong
cong san » cong tac
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu tinh) or (chau tinh)) - hanh doanh nhan tong cong san ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chau tinh)) - hanh doanh nhan tong cong san ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) or (chau tinh)) - hanh doanh nhan tong cong san ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chau tinh)) - hanh doanh nhan tong cong san ((toan cao) OR (toan ban))*.