Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
hanh tran » hanh trang, thanh tran, hanh tram
tran ung » tran hung, tran dung, tran tung
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tap
hoi chu » hoi chuc
ho chu » cho chu, ho chua, hoc chu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chu) or (hoi chu)) tinh - hanh tran ung dung ((cong dan) or (cong thanh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chu) OR (hoi chu)) tinh - hanh tran ung dung ((cong dan) OR (cong thanh)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chu) or (hoi chu)) tinh - hanh tran ung dung ((cong dan) or (cong thanh)) toan cau*.