Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh tranh » canh tranh, hanh trinh, lanh tranh
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
ho chiet » ho chieu, ho thiet, hoc thiet
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac
hanh cac » hang cac, hanh cat, nhanh cay

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - ((hanh tranh) or (hanh trang)) va nhung cong tan ((than cap) or (hanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - ((hanh tranh) OR (hanh trang)) va nhung cong tan ((than cap) OR (hanh cac)).
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - ((hanh tranh) or (hanh trang)) va nhung cong tan ((than cap) or (hanh cac))*.