Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhung cong » thong cong, hang cong, nhung don
manh tran » manh tuan, canh tranh, hanh trang
tran tuan » tran xuan, tran quang, tran thanh
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
ho chiet » ho chieu, ho thiet, hoc thiet
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - manh tran tuan ((nhung cong) OR (dung cong)) ((manh toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - manh tran tuan ((nhung cong) OR (dung cong)) ((manh toan) OR (van tuan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - manh tran tuan ((nhung cong) OR (dung cong)) ((manh toan) or (van tuan)) cau".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - manh tran tuan ((nhung cong) OR (dung cong)) ((manh toan) or (van tuan)) cau*.