Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh nhan » trinh han, trinh nha, trinh nhap
trinh phan » trinh han, trinh quan, trinh toan
thanh phan » thanh pho, thanh san, thanh toan
hoc chieu » hoc thieu, ho chieu, hoc hien
thuc hung » thuc chung, thuc nhung, thuc dung
hung cong » nhung cong, hung cuong, phung cong
than phan » toan phan, thanh pham, thanh nhan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - ((trinh nhan) OR (trinh phan)) thuc hung cong ((than phan) or (thanh phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((trinh nhan) OR (trinh phan)) thuc hung cong ((than phan) OR (thanh phan)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((trinh nhan) OR (trinh phan)) thuc hung cong ((than phan) or (thanh phan)) tu".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((trinh nhan) OR (trinh phan)) thuc hung cong ((than phan) or (thanh phan)) tu*.