Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
danh trung » dang trung, dinh trung, thanh trung
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, thong cong, hang cong
cong san » cong tac
toan cau » toan ban, toan tap, toan tai
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: theo chieu sach - ((danh trung) or (manh trung)) va nhung cong san ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((danh trung) OR (manh trung)) va nhung cong san ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((danh trung) or (manh trung)) va nhung cong san ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((danh trung) or (manh trung)) va nhung cong san ((toan cau) OR (toan cao))*.