Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tang thanh » dang thanh, trung thanh, hoang thanh
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh ven » trinh van, trinh den, tinh ven
dung cong » dung trong
cong tang » cong thang, cong tan, cong lang
thanh ban » thanh san, thanh van, thanh bac
trinh ve » trinh he, trinh va, trinh vi

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 - hanh ((trinh ve) or (trinh ven)) dung cong tang thanh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trinh ve) OR (trinh ven)) dung cong tang thanh ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trinh ve) or (trinh ven)) dung cong tang thanh ban*.