Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh cua » trinh luat, trinh quan, trinh luan
nho hieu » nha hieu, nho sieu, nhu hieu
tinh cua » sinh cua, tinh chat, tranh cua
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap
ho hieu » ho chieu, hoi hieu, co 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) or (nho hieu)) lang - hanh ((trinh cua) OR (tinh cua)) nhung cong ban than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (nho hieu)) lang - hanh ((trinh cua) OR (tinh cua)) nhung cong ban than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho hieu) or (nho hieu)) lang - hanh ((trinh cua) OR (tinh cua)) nhung cong ban than cau".
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) or (nho hieu)) lang - hanh ((trinh cua) OR (tinh cua)) nhung cong ban than cau*.