Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, mot chieu
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
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)) xanh - anh tang cua nhung ((cong san) or (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - anh tang cua nhung ((cong san) OR (cong tan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) xanh - anh tang cua nhung ((cong san) or (cong tan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) xanh - anh tang cua nhung ((cong san) or (cong tan)) toan cau*.