Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan

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 - anh tang cua ((hang cong) OR (bang cong)) ((tinh toan) or (anh tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - anh tang cua ((hang cong) OR (bang cong)) ((tinh toan) OR (anh tuan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - anh tang cua ((hang cong) OR (bang cong)) ((tinh toan) or (anh tuan)) cau*".