Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
hanh han » hanh nhan, hanh phan, hanh san
cong tac » cong ty
tac trai » tam trai, khac trai, rac thai
trai van » tran van, tri van, thai van
han cua » hang cua, nhan cua, than cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo tieu) or (ho chieu)) xanh - hanh han cua nhung cong tac trai van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (ho chieu)) xanh - hanh han cua nhung cong tac trai van.
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (ho chieu)) xanh - hanh han cua nhung cong tac trai van*.