Perhaps you should try some spelling variations:
truong quan » trong quan, thong quan, luong quan
theo chieu » theo tieu, ho chieu, theo chu
truong cua » truong ca, truong cao, huong cua
doc hieu » toc thieu, hoc thieu, hoc hien
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham 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: ((doc hieu) or (theo chieu)) xanh - thanh ((truong cua) OR (truong quan)) trong cong tam toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (theo chieu)) xanh - thanh ((truong cua) OR (truong quan)) trong cong tam toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (theo chieu)) xanh - thanh ((truong cua) OR (truong quan)) trong cong tam toan ban".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (theo chieu)) xanh - thanh ((truong cua) OR (truong quan)) trong cong tam toan ban*.