Perhaps you should try some spelling variations:
trinh nghiem » trinh nghien, kinh nghiem, trinh nghe
hanh trinh » canh tranh, hanh chinh
nghiem va » nghiep va, nghiep vua, nghiep vu
hoc hanh » hoc nhanh, hoc thanh, hoc anh
cac thai » cac thoi, ca thai, rac thai
nghe dai » nghe dan, nghe di, nghe hai
cac thi » cac thoi, cau thi, can thi
va hoc » van hoc

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 hanh trinh nghiem va hoc ) OR ( thuoc ((cac thai) OR (cac thi)) nghe dai hoc ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( hoc hanh trinh nghiem va hoc ) or ( thuoc ((cac thai) OR (cac thi)) nghe dai hoc ))~".
• Adding a wildcard symbol may retrieve word variants: (( hoc hanh trinh nghiem va hoc ) or ( thuoc ((cac thai) OR (cac thi)) nghe dai hoc ))*.