Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
tong cong » trong cong, cong cong, dung cong
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
kinh va » kinh van, tinh va, sinh va
va tong » va thong, va tuong, va trong

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 (may tinh)) - than kinh va tong cong dan ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (may tinh)) - than kinh va tong cong dan ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) or (may tinh)) - than kinh va tong cong dan ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (may tinh)) - than kinh va tong cong dan ((toan cau) OR (toan ban))*.