Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hieu cach » hieu cac, hieu ca, biet cach
ty nhung » tay nhung, tu nhung, ky nhung
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu cach) or (chieu sach)) - thanh cong ty nhung cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu cach) OR (chieu sach)) - thanh cong ty nhung cong tan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu cach) or (chieu sach)) - thanh cong ty nhung cong tan than cau*.