Perhaps you should try some spelling variations:
vien thanh » viet thanh, tien thanh, dien thanh
nhung cong » dung cong, thong cong, hang cong
tranh cua » manh cua
doanh cua » doanh luan
hoc vien » hoc hien, hoc viet, hoc tieng
cong tan » cong tac, cong san, cong thanh
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.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc vien thanh - hanh ((tranh cua) or (doanh cua)) nhung cong tan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc vien thanh - hanh ((tranh cua) OR (doanh cua)) nhung cong tan ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc vien thanh - hanh ((tranh cua) or (doanh cua)) nhung cong tan ((toan cau) or (toan cao))*.