Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
cong danh » cuong danh, cong dan, cong thanh
tranh va » tranh van, trinh va, thanh va
trang va » tran van, hang va
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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: ho hieu lang - canh ((tranh va) OR (trang va)) nhung cong danh ((toan tap) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh ((tranh va) or (trang va)) nhung cong danh ((toan tap) or (toan ban))*.