Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
chieu sang » chieu sach, chieu xanh, hieu lang
hieu quan » hieu qua, lieu quan, thien quan
cua nhung » va nhung
hieu van » hieu va, thien van, lieu va
anh dung » anh dong, anh huong, sach dung
dung cua » dung luan, dung cho
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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: doi ((chieu sang) OR (((hieu van) OR (hieu quan)))) - anh dung cua nhung huong dan than cau~.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (((hieu van) or (hieu quan)))) - anh dung cua nhung huong dan than cau*.