Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu sach » chieu sach, hieu cach, dien sach
trung cua » truong cua, trung tuan, trung cap
doc hieu » toc thieu, hoc thieu, hoc hien
tung cua » tuong cua, dung cua, tang cua
ban canh » ban hanh, van canh, ban anh
ban can » ban dan, ban hang, ban hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sach - thanh ((tung cua) or (trung cua)) nhung cong ((ban can) or (ban canh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - thanh ((tung cua) OR (trung cua)) nhung cong ((ban can) OR (ban canh)) cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - thanh ((tung cua) or (trung cua)) nhung cong ((ban can) or (ban canh)) cau*.