Perhaps you should try some spelling variations:
tien manh » tien anh, tien thanh, tieng anh
cua nhung » va nhung
hoc tien » hoc tieng, hoc hien, hoc vien
anh bang » anh hoang, anh quang, tinh bang
bang cua » ban cua, mang cua, hang cua
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
toan cau » 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 tien manh - anh bang cua nhung ((cong san) OR (cong tan)) toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc tien manh - anh bang cua nhung ((cong san) or (cong tan)) toan cau*.