Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
truong va » truong dai, truong cao, truong dao
tran van » luan van
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
sua cau » cua cau, lua cau, sua chua
su cau » cu cau, su cao, su can

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((sua cau) OR (su cau)) sach - thanh ((truong va) or (tran van)) nhung huong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((sua cau) OR (su cau)) sach - thanh ((truong va) OR (tran van)) nhung huong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((sua cau) OR (su cau)) sach - thanh ((truong va) or (tran van)) nhung huong dan than cau".
• Adding a wildcard symbol may retrieve word variants: ((sua cau) OR (su cau)) sach - thanh ((truong va) or (tran van)) nhung huong dan than cau*.