Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
hoi hieu » hoi phieu, hoi tieu, moi hieu
tinh cua » trinh cua, sinh cua, tinh thua
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi hieu lang - hanh ((((tinh cua) or (tranh cua))) or (tinh chat)) nhung cong ban than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - hanh ((((tinh cua) OR (tranh cua))) OR (tinh chat)) nhung cong ban than cau.
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - hanh ((((tinh cua) or (tranh cua))) or (tinh chat)) nhung cong ban than cau*.