Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
lang thanh » dang thanh, tang thanh, lang thang
hoc chieu » hoc thieu, ho chieu, hoc hien
dung cong » dung trong
cong lang » cong vang, cong luong, cong quang
thanh ban » thanh san, thanh van, thanh bac
trinh ve » trinh he, trinh va, trinh vi
tinh ven » trinh ven, tinh yen, sinh vien

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