Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh nghe » trinh nghien, trinh he, trinh nha
thuoc cac » thuoc cuc, thuoc cao, thuoc dac
hoc hanh » hoc nhanh, hoc thanh, hoc anh
cac thai » cac thoi, ca thai, cac thi
nghe dai » nghe dan, nghe di, nghe hai
nghe va » nghe dan
va hoc » van hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( hoc hanh trinh nghe va hoc ) or ( thuoc cac thai nghe dai hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( hoc hanh trinh nghe va hoc ) OR ( thuoc cac thai nghe dai hoc )).
• Adding a wildcard symbol may retrieve word variants: (( hoc hanh trinh nghe va hoc ) or ( thuoc cac thai nghe dai hoc ))*.