Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trung » thanh trung, hanh trang, manh trung
trung tham » trung tam, trung thanh, trung thang
tham nhung » thi nhung
nhung cong » dung cong, thong cong, hang cong
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau

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) or (chieu tinh)) - hanh trung tham nhung cong tan tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu tinh)) - hanh trung tham nhung cong tan tran cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu tinh)) - hanh trung tham nhung cong tan tran cau*.