Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
thieu sang » chieu sang, thieu khang, thieu quang
cua nhung » va nhung
chong van » thong van, hong van, phong van
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
van quan » van ban
quan ban » quang ban, qua ban, quan van

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 ((thieu sang) OR (chinh sach)) - anh tang cua nhung chong van quan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (chinh sach)) - anh tang cua nhung chong van quan ban*.