Perhaps you should try some spelling variations:
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
hoc thieu » toc thieu, hoc hien
hoc hieu » hoc hien, doc hieu, hoc dieu
anh dung » anh dong, anh huong, sach dung
cong dan » cong san, cong tan, huong dan
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (hoc thieu)) cach - anh dung luan chung cong dan ((toan tap) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) or (hoc thieu)) cach - anh dung luan chung cong dan ((toan tap) or (toan ban))*.