Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
chieu sach » chinh sach, chiet tach, chieu sang
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
dan juan » dan luan, dan quan, dan quang
juan cao » quang cao, toan cao, quan cau
tinh » trinh, dinh, minh

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((may tinh) OR (chieu sach)) - thanh ((trung cua) OR (trung cap)) nhung huong dan juan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((may tinh) or (chieu sach)) - thanh ((trung cua) OR (trung cap)) nhung huong dan juan cao~".
• Adding a wildcard symbol may retrieve word variants: theo ((may tinh) or (chieu sach)) - thanh ((trung cua) OR (trung cap)) nhung huong dan juan cao*.