Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh phan » thanh phan, anh phan, hanh nhan
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
hanh han » hanh nhan, hanh san, anh han
cong tan » cong tac, cong san, cong thanh
tran van » luan van

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) OR (hanh phan)) cua nhung cong tan tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (ho chieu)) xanh - ((hanh han) OR (hanh phan)) cua nhung cong tan tran van.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) or (ho chieu)) xanh - ((hanh han) OR (hanh phan)) cua nhung cong tan tran van".
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (ho chieu)) xanh - ((hanh han) OR (hanh phan)) cua nhung cong tan tran van*.