Perhaps you should try some spelling variations:
tmanh trung » thanh trung, thanh tung, manh tung
chieu sach » chinh sach, chiet tach, chieu sang
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
cua nhung » va nhung
cong san » cong tac
san van » tan van, luan van, tran 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 - ((manh trung) or (tmanh trung)) cua nhung cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((manh trung) OR (tmanh trung)) cua nhung cong san van ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((manh trung) or (tmanh trung)) cua nhung cong san van ban*.