Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
chieu sach » chinh sach, chiet tach, chieu sang
thanh dung » thanh duong, thanh tung, thanh hung
luan bang » luan nang, luan ban, luan tang
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh dung luan bang ((cong tan) or (truong thanh)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh dung luan bang ((cong tan) OR (truong thanh)) van ban*.