Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien manh » hien hanh, hieu manh, hien nhanh
tien manh » tien anh, tien thanh, tran manh
dang cong » dung cong
tam dang » nam dang, tam dan, tran dang
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien manh) OR (((tien manh) OR (tieng anh)))) - thanh trung tam dang cong tap toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien manh) or (((tien manh) OR (tieng anh)))) - thanh trung tam dang cong tap toan ban~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien manh) or (((tien manh) OR (tieng anh)))) - thanh trung tam dang cong tap toan ban*.