Perhaps you should try some spelling variations:
tuong quan » truong quan, thong quan, luong quan
hoc chieu » hoc thieu, ho chieu, hoc hien
dung cong » dung trong
tung qua » dung qua, trung quan, duong qua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van 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 chieu) or (toc thieu)) sang - thanh ((tung qua) OR (tuong quan)) dung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (toc thieu)) sang - thanh ((tung qua) OR (tuong quan)) dung cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (toc thieu)) sang - thanh ((tung qua) OR (tuong quan)) dung cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (toc thieu)) sang - thanh ((tung qua) OR (tuong quan)) dung cong tac toan ban*.