Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
chieu tinh » trieu tinh, lieu tinh, kieu tinh
nhan thong » nhan trong, nha thong, nhan khong
thong cong » trong cong, tong cong, thong thong
chau tinh » cuu tinh, ha tinh, cua tinh
cong san » cong tac
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)) - doanh doanh nhan thong cong san ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chau tinh)) - doanh doanh nhan thong cong san ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) or (chau tinh)) - doanh doanh nhan thong cong san ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chau tinh)) - doanh doanh nhan thong cong san ((toan tap) OR (toan ban))*.