Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
thanh phan » thanh pho, thanh san, thanh toan
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
dung dat » dung va, dung tai
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh ((dung dat) or (huong dan)) dung cong thanh phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((dung dat) OR (huong dan)) dung cong thanh phan lap.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((dung dat) or (huong dan)) dung cong thanh phan lap*.