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, nhung don
hang cong » dang cong, hang nong, bang cong
tac toan » tap toan, tam toan, hach 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: theo chieu sach - ((danh trung) or (manh trung)) cua ((nhung cong) OR (hang cong)) tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((danh trung) OR (manh trung)) cua ((nhung cong) OR (hang cong)) tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((danh trung) or (manh trung)) cua ((nhung cong) OR (hang cong)) tac toan cau".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((danh trung) or (manh trung)) cua ((nhung cong) OR (hang cong)) tac toan cau*.