Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
bo truong » moi truong
xa truong » cac truong
doc hieu » toc thieu, hoc hien
anh dung » anh dong, anh huong, sach dung
cong san » cong tac
san toan » van toan, dan toan, manh 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 (doc hieu)) manh - anh dung ((bo truong) OR (xa truong)) cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doc hieu)) manh - anh dung ((bo truong) OR (xa truong)) cong san toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (doc hieu)) manh - anh dung ((bo truong) OR (xa truong)) cong san toan tap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doc hieu)) manh - anh dung ((bo truong) OR (xa truong)) cong san toan tap*.