Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
thang va » hang va, trang va, thanh va
thong va » thong cua, truong va, thong qua
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - thanh ((thang va) OR (thong va)) dung ((cong tan) OR (cong san)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - thanh ((thang va) or (thong va)) dung ((cong tan) OR (cong san)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - thanh ((thang va) or (thong va)) dung ((cong tan) OR (cong san)) toan cau*.