Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
nhan nhanh » nhanh thanh, nhat hanh
doi chieu » doc hieu, doi chi, mot chieu
cong cong » cong dong, trong cong, dung cong
trung co » trung bo, trong co, truong cao
ban hanh » ban hang
co cong » cao cong, cho cong, bo cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh trung co cong cong ((ban hanh) or (nhan nhanh)) ha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh trung co cong cong ((ban hanh) OR (nhan nhanh)) ha.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh trung co cong cong ((ban hanh) or (nhan nhanh)) ha*.