Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu hanh » chieu xanh, dieu hanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
truong va » truong dai, truong cao, truong dao
thong va » thong cua, thong qua, thong xay
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu hanh - hanh ((thong va) or (truong va)) nhung cong tan ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu hanh - hanh ((thong va) OR (truong va)) nhung cong tan ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu hanh - hanh ((thong va) or (truong va)) nhung cong tan ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo chieu hanh - hanh ((thong va) or (truong va)) nhung cong tan ((toan cau) OR (toan ban))*.