Perhaps you should try some spelling variations:
thanh trung » thanh tung
trong thuc » trong thu, thuong thuc, trong thuat
thuc thanh » thuoc thanh, thuc hanh, phuc thanh
hieu manh » chieu xanh, hieu nganh, hien hanh
thanh cao » thanh ca, thanh cac, thanh thao
tam dung » tam duong, tac dung, tan dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((hieu manh) or (dieu hanh)) - thanh trung tam dung trong thuc thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu manh) OR (dieu hanh)) - thanh trung tam dung trong thuc thanh cao*.