Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
dung cong » dung trong
cong tang » cong thang, cong tan, cong lang
hoc dien » hoc hien, hoc vien, hoc dieu
dien dan » hien dai, vien dai, gian dan
van dung » van dong, xay dung, tin dung
tang van » dang van, hoang van, trong van
van cau » van dau, van hau, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dien dan - ((hanh trinh) or (canh tranh)) van dung cong tang van cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dien dan - ((hanh trinh) OR (canh tranh)) van dung cong tang van cau.
• Adding a wildcard symbol may retrieve word variants: hoc dien dan - ((hanh trinh) or (canh tranh)) van dung cong tang van cau*.