Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, manh truong
truong cao » truong dai
nhung cong » dung cong, thong cong, hang cong
cao nhung » cho nhung, cam nhung, cao chung
ban hanh » ban hang
yen tinh » tuyen tinh
cong san » cong tac
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((ban hanh) OR (yen tinh)) - hanh truong cao nhung cong san ((toan cau) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((ban hanh) or (yen tinh)) - hanh truong cao nhung cong san ((toan cau) OR (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((ban hanh) or (yen tinh)) - hanh truong cao nhung cong san ((toan cau) OR (toan cao))*.