Perhaps you should try some spelling variations:
tien nghiep » trien nghiep, vien nghien, bien nghien
nghiep dai » nghiep tai, nghiep bai, nghiep va
nghiem bai » nghiem ban, nghiep bai, nghiep tai
sach tien » sach tren, sach thieu
su sach » so sach, vu sach
te sach » toc sach
kinh » dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach tien nghiep dai hoc ) or ( te sach kinh nghiem bai hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach tien nghiep dai hoc ) OR ( te sach kinh nghiem bai hoc )).
• Adding a wildcard symbol may retrieve word variants: (( su sach tien nghiep dai hoc ) or ( te sach kinh nghiem bai hoc ))*.