Perhaps you should try some spelling variations:
trien nghiep » trinh nghien, vien nghien, bien nghien
tham nghiep » thuat nghiep, lam nghiep, tam nghien
sach trien » sach tien, sach tren, sach thieu
sach tham » sach nha
nghiep va » nghiep vu
nghiep du » nghiep dau, nghiep vu, nghiep tu
toc sach » hoc sach, doc sach, thuoc sach
bo sach » co sach, hoc sach
va hoc » van hoc
du hoc » tu hoc, duoc hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( toc sach tham nghiep va hoc ) or ( bo sach trien nghiep du hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( toc sach tham nghiep va hoc ) OR ( bo sach trien nghiep du hoc ))*.