Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tang luan » dung luan
chu manh » ho manh, chu han, chu van
tang cua » mang cua, hang cua, thong cua
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap
cua chu » sua chua

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

• Performing a fuzzy search may retrieve terms with similar spellings: cua chu manh - hanh ((tang cua) or (tang luan)) nhung cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cua chu manh - hanh ((tang cua) OR (tang luan)) nhung cong tac than cau.
• Adding a wildcard symbol may retrieve word variants: cua chu manh - hanh ((tang cua) or (tang luan)) nhung cong tac than cau*.