Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
hanh doanh » hang doanh, chinh doanh, doanh doanh
nhan thong » nhan trong, nha thong, nhan khong
thong cong » trong cong, tong cong, thong thong
chau tinh » cuu tinh, ha tinh, cua tinh
san toan » van toan, manh toan, xuan toan
dan toan » van toan, dan than, manh toan

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