Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
hieu lang » chieu sang, hieu quang, nhieu tang
hieu quan » hieu qua, lieu quan, thien quan
cua nhung » va nhung
huong van » huong dan, duong van, hong van
van thang » van thanh, van khang, van hang
thang cau » hang cau, thong cau, thanh chau
hieu van » hieu va, thien van, lieu va
dung cua » dung luan, dung cho

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 ((hieu lang) OR (((hieu van) OR (hieu quan)))) - sach dung cua nhung huong van thang cau~.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (((hieu van) or (hieu quan)))) - sach dung cua nhung huong van thang cau*.