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 tan » cong tac, cong san, cong thanh
tran van » luan 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 tan tran van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) OR (ho chieu)) xanh - hanh han cua nhung cong tan tran van".
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) OR (ho chieu)) xanh - hanh han cua nhung cong tan tran van*.