Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh van » trinh han, trinh quan, trinh toan
dung cong » dung trong
trinh va » trinh vat, trinh ve, trinh vi
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan cac » nhan cach, phan dau, phan lap

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)) dung cong tac phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - canh ((trinh va) OR (trinh van)) dung cong tac phan cac.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - canh ((trinh va) or (trinh van)) dung cong tac phan cac*.