Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
theo chieu » theo tieu, ho chieu, theo chu
thiet yeu » thiet ke, theo yeu
trung cua » truong cua, trung tuan, trung cap
tong cong » trong cong, cong cong, dung cong
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van 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: ((theo chieu) or (thiet yeu)) tinh - manh trung cua tong cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (thiet yeu)) tinh - manh trung cua tong cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (thiet yeu)) tinh - manh trung cua tong cong dan than cau*.