Perhaps you should try some spelling variations:
cong luong » cong thuong, nang luong, cong cong
hieu lang » chieu sang, hieu quang, nhieu tang
cong vang » cong lang, cong quang, cong ngang
nhanh cau » nhanh cay, thanh chau, nhanh ha
cong cua » cong cu, dong cua, huong cua
cua hang » cua dang, cua nhung, cua cong
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - thanh cong cua hang ((cong vang) or (((cong luong) OR (cong dong)))) nhanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh cong cua hang ((cong vang) OR (((cong luong) OR (cong dong)))) nhanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - thanh cong cua hang ((cong vang) or (((cong luong) OR (cong dong)))) nhanh cau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh cong cua hang ((cong vang) or (((cong luong) OR (cong dong)))) nhanh cau*.