Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh van » trinh han, trinh quan, trinh toan
trinh va » trinh vat, trinh ve, trinh vi
tac phan » tai phan, tac phat, cac phan
tac pham » thuc pham, san pham

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 - canh ((trinh va) or (trinh van)) nhung cong ((tac phan) OR (tac pham)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - canh ((trinh va) OR (trinh van)) nhung cong ((tac phan) OR (tac pham)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - canh ((trinh va) or (trinh van)) nhung cong ((tac phan) OR (tac pham)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - canh ((trinh va) or (trinh van)) nhung cong ((tac phan) OR (tac pham)) cau*.