Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
truong cua » truong quan, truong cao, huong cua
truong ca » truong cao, truong va, trong ca
dung cong » dung trong
ho chieu » hoc thieu, doi chieu, mot chieu
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: ((theo chieu) or (ho chieu)) xanh - thanh ((truong cua) OR (truong ca)) dung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) xanh - thanh ((truong cua) OR (truong ca)) dung cong tac toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) xanh - thanh ((truong cua) OR (truong ca)) dung cong tac toan ban*".