Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
manh trung » thanh trung, manh hung, sinh trung
manh tung » manh hung, thanh tung
cua nhung » va nhung
cot lieu » co lieu, vat lieu, cu lieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
so lieu » so dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((cot lieu) or (so lieu)) tinh - ((manh trung) or (manh tung)) cua nhung cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((cot lieu) OR (so lieu)) tinh - ((manh trung) OR (manh tung)) cua nhung cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: ((cot lieu) or (so lieu)) tinh - ((manh trung) or (manh tung)) cua nhung cong dan than cau*.