Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
trinh cua » trinh luat, trinh quan, trinh luan
manh toan » thanh toan, anh tuan, tinh toan
ho chiet » ho chieu, ho thiet, hoc thiet
tinh cua » sinh cua, tinh chat, tranh cua
dan than » dan chan, ban than, van than

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 - hanh ((trinh cua) or (tinh cua)) nhung cong ((dan than) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh ((trinh cua) OR (tinh cua)) nhung cong ((dan than) OR (manh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh ((trinh cua) or (tinh cua)) nhung cong ((dan than) or (manh toan)) cau*.