Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
canh manh » lanh manh, canh tranh, cach mang
manh toan » thanh toan, anh tuan, tinh toan
manh cua » doanh cua, ban cua
dan than » dan chan, ban than, van than

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 sach - canh manh cua ((nhung cong) OR (thong cong)) ((dan than) OR (manh toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - canh manh cua ((nhung cong) OR (thong cong)) ((dan than) or (manh toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - canh manh cua ((nhung cong) OR (thong cong)) ((dan than) or (manh toan)) cau*.