Perhaps you should try some spelling variations:
dung cong » dung trong
thanh van » thanh san, thanh toan, thanh phan
hoc vien » hoc hien, hoc tieng, hoc vi
hoc viet » hoc hien
tranh va » tranh van, trang va, trinh va
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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) OR (hoc viet)) anh - canh ((tranh va) or (thanh van)) dung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc vien) OR (hoc viet)) anh - canh ((tranh va) OR (thanh van)) dung cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc vien) OR (hoc viet)) anh - canh ((tranh va) or (thanh van)) dung cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc vien) OR (hoc viet)) anh - canh ((tranh va) or (thanh van)) dung cong tac toan cao*.