Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trung » thanh trung, hanh trang, manh trung
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (theo tieu)) xanh - hanh trung cua nhung cong tan ((than cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (theo tieu)) xanh - hanh trung cua nhung cong tan ((than cau) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (theo tieu)) xanh - hanh trung cua nhung cong tan ((than cau) or (than cap))*.