Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
dong cong » duong cong, dung cong, dang cong
ho chieu » theo chieu, hoc thieu, mot chieu
anh tang » anh dang, anh nang, anh sang
anh bang » anh hoang, anh quang, tinh bang
cua dong » chua dong, cua cong, cua dang
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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)) sach - ((anh tang) or (anh bang)) cua dong cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - ((anh tang) OR (anh bang)) cua dong cong tan toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - ((anh tang) or (anh bang)) cua dong cong tan toan cau*".