Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
hoc thieu » toc thieu, hoc hien
hanh tran » hanh trang, thanh tran, hanh tram
ho chieu » theo chieu, doi chieu, mot chieu
tran van » luan van
van dung » van dong, xay dung, tin dung
cong tan » cong tac, cong san, cong ty
toan tap » toan ban

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 (hoc thieu)) xanh - hanh tran van dung ((cong tan) or (cong thanh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - hanh tran van dung ((cong tan) OR (cong thanh)) toan tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) xanh - hanh tran van dung ((cong tan) or (cong thanh)) toan tap*".