Perhaps you should try some spelling variations:
truong cua » truong ca, truong quan, huong cua
truong cao » truong dai
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (doi chi)) xanh - thanh ((truong cua) OR (truong cao)) dung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chi)) xanh - thanh ((truong cua) OR (truong cao)) dung cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chi)) xanh - thanh ((truong cua) OR (truong cao)) dung cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chi)) xanh - thanh ((truong cua) OR (truong cao)) dung cong tac toan ban*.