Perhaps you should try some spelling variations:
trinh nghiep » trinh nghien, trinh ghep, trinh nhiet
khanh trinh » hanh trinh, thanh trinh, nhanh tinh
sach trinh » sach tranh, hanh trinh, sach kinh
trinh nghe » trinh nghien, trinh he, trinh nha
nghiep tu » nghiep vu, nghiep vua, nghiep cua
so sach » so sanh, bo sach, co sach
nghe xu » nghe thu
tu hoc » te hoc
xu hoc » du hoc, su hoc, xa hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sach trinh nghiep tu hoc ) or ( duy khanh trinh nghe xu hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sach trinh nghiep tu hoc ) OR ( duy khanh trinh nghe xu hoc )).
• Adding a wildcard symbol may retrieve word variants: (( so sach trinh nghiep tu hoc ) or ( duy khanh trinh nghe xu hoc ))*.