Perhaps you should try some spelling variations:
trung cong » truong cong, trong cong, trung uong
cua trung » cua truong, xuan trung, cua nhung
hanh san » thanh san, khach san, thanh son
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu
san cua » sang cua, ban cua, dan cua

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 qua - hanh san cua trung cong san ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu qua - hanh san cua trung cong san ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho hieu qua - hanh san cua trung cong san ((toan cau) or (toan ban))*.