Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
manh trung » manh tung, thanh trung, manh hung
thiet yeu » thiet ke, theo yeu
trung cua » truong cua, trung tuan, trung cap
dang cong » dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
cua dang » cua cong, cua ban
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
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: ((doc hieu) or (((theo chieu) or (thiet yeu)))) xanh - manh trung cua dang cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (((theo chieu) OR (thiet yeu)))) xanh - manh trung cua dang cong tac than cau.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (((theo chieu) or (thiet yeu)))) xanh - manh trung cua dang cong tac than cau*.