Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
phan dau » phan tu, hang 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 trung) or (thanh cong)) cua nhung ((cong dan) or (cong thanh)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((thanh trung) OR (thanh cong)) cua nhung ((cong dan) OR (cong thanh)) phan dau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((thanh trung) or (thanh cong)) cua nhung ((cong dan) or (cong thanh)) phan dau*.