Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh tran » hanh trang, thanh tran, hanh tram
tran tuan » tran xuan, tran quang, tran thanh
dang cong » dung cong
dan than » dan chan, ban than, van than
van toan » van tuan, van tan, van thanh

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 tran tuan ((nhung cong) or (dang cong)) ((dan than) or (van toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh tran tuan ((nhung cong) OR (dang cong)) ((dan than) OR (van toan)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh tran tuan ((nhung cong) or (dang cong)) ((dan than) or (van toan)) ban*.