Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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 sach - canh tranh va nhung cong tan ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - canh tranh va nhung cong tan ((than cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - canh tranh va nhung cong tan ((than cau) or (toan cau))*.