Perhaps you should try some spelling variations:
thanh chau » thanh cham, thanh chu, thanh hai
nhung cong » dung cong, thong cong, hang cong
hieu quan » hieu qua, lieu quan, thien quan
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
thanh cau » thanh mau, nhanh cau, thanh ca
thanh cha » thanh ha, thanh nha, thanh phan
tang cua » mang cua, hang cua, tang luan
cong san » cong tac
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 quan - hanh tang cua nhung cong san ((thanh cau) or (((thanh chau) OR (thanh cha))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quan - hanh tang cua nhung cong san ((thanh cau) OR (((thanh chau) OR (thanh cha)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu quan - hanh tang cua nhung cong san ((thanh cau) or (((thanh chau) OR (thanh cha))))".
• Adding a wildcard symbol may retrieve word variants: ho hieu quan - hanh tang cua nhung cong san ((thanh cau) or (((thanh chau) OR (thanh cha))))*.