Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
cau thang » cang thang, cuu thanh, nam thang
ban thanh » ban hanh, ban hang
dan than » dan chan, ban than, van than
cap hay » cap xay, cap han, cap giay

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 - thanh trung ((cau thang) or (cap hay)) cong ((dan than) or (ban thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung ((cau thang) OR (cap hay)) cong ((dan than) OR (ban thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung ((cau thang) or (cap hay)) cong ((dan than) or (ban thanh)) cau*.