Perhaps you should try some spelling variations:
ban phuong » bang phuong, ban huong, van phuong
phuong bai » phuong mai, phuong bac, phuong bui
hieu lang » chieu sang, hieu quang, nhieu tang
dong cong » duong cong, dung cong, dang cong
cong cong » cong dong, trong cong, dung cong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong cua » cong cu, dong cua, huong cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - thanh cong cua ((dong cong) or (cong cong)) ban phuong bai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - thanh cong cua ((dong cong) OR (cong cong)) ban phuong bai*.