Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
doi chieu » doc hieu, doi chi, mot chieu
hanh dung » thanh dung, anh dung, hanh dong
ho chieu » theo chieu, hoc thieu, mot chieu
dung cua » dung luan, dung cho
cua tong » cua cong, cua dong, cua nong
cong tan » cong tac, cong san, cong ty
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: ((ho chieu) OR (doi chieu)) xanh - hanh dung cua tong ((cong tan) or (cong thanh)) tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - hanh dung cua tong ((cong tan) OR (cong thanh)) tran van.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) xanh - hanh dung cua tong ((cong tan) or (cong thanh)) tran van".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) xanh - hanh dung cua tong ((cong tan) or (cong thanh)) tran van*.