Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
hanh trang » thanh trung, canh tranh, hanh trinh
trang cap » trung cap, trong cap, tranh chap
dang cong » dung cong
cap dang » cao dang, cac dang, cap bang
van tan » van tuan, van ban, van thanh
van tai » von tai, van tuan

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) or (chiet tach)) - hanh trang cap dang cong ((van tan) or (van tai)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chiet tach)) - hanh trang cap dang cong ((van tan) OR (van tai)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chiet tach)) - hanh trang cap dang cong ((van tan) or (van tai)) cau*.