Perhaps you should try some spelling variations:
thanh tung » thanh cong
hoc thieu » hoc hien
dung cong » dung trong
tung cua » trung cua, tuong cua, dung cua
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) OR (toc thieu)) tinh - thanh tung cua dung cong tac toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (toc thieu)) tinh - thanh tung cua dung cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (toc thieu)) tinh - thanh tung cua dung cong tac toan tap*.