Perhaps you should try some spelling variations:
vien trinh » tien trinh, viet trinh, tien thinh
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh cua » doanh luan
bang cong » dang cong, bang song, hang cong
hoc vien » hoc hien, hoc viet, hoc tieng
cua bang » chua bang, cua ban, cua dang
dan than » dan chan, ban than, van than

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 trinh - hanh doanh cua bang cong ((dan than) or (anh tuan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc vien trinh - hanh doanh cua bang cong ((dan than) OR (anh tuan)) tap.
• Adding a wildcard symbol may retrieve word variants: hoc vien trinh - hanh doanh cua bang cong ((dan than) or (anh tuan)) tap*.