Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu manh » hieu manh, tien manh, chieu xanh
trieu minh » trieu tinh, trien minh, trien kinh
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
va lang » hoa lang
va nang » van nang, da nang, cam nang

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 ((thieu manh) OR (trieu minh)) - thanh trung ((va lang) OR (va nang)) cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu manh) or (trieu minh)) - thanh trung ((va lang) OR (va nang)) cong dan toan cao~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu manh) or (trieu minh)) - thanh trung ((va lang) OR (va nang)) cong dan toan cao*.