Perhaps you should try some spelling variations:
trinh nghien » trinh nghe, kinh nghiem, trinh thiet
nghien dien » nghiep dien, nghe dien, khien dien
hanh trinh » canh tranh, hanh chinh
nghiep bai » nghiep tai, nghiep bao, nghiep bac
xi nghiep » su nghiep
dien hoc » dien hoa, khien hoc, tin hoc
thu sach » tu sach, thuat sach, thuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
lu hanh » luu hanh, du hanh, ly hanh
bai hoc » dai hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( lu hanh trinh nghien dien hoc ) or ( ((thu sach) or (hoc sach)) xi nghiep bai hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( lu hanh trinh nghien dien hoc ) OR ( ((thu sach) OR (hoc sach)) xi nghiep bai hoc )).
• Adding a wildcard symbol may retrieve word variants: (( lu hanh trinh nghien dien hoc ) or ( ((thu sach) or (hoc sach)) xi nghiep bai hoc ))*.