Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
hoc chieu » hoc thieu, ho chieu, hoc hien
van thanh » ban thanh, van tuan
thanh tap » thanh lap, thanh tai, thanh tay
cong van » cong vang, cong san, song van

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 trung ((va nhung) or (cua cong)) cong van thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trung ((va nhung) OR (cua cong)) cong van thanh tap.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trung ((va nhung) or (cua cong)) cong van thanh tap*.