Perhaps you should try some spelling variations:
kinh nghiep » kinh nghiem, doanh nghiep, trinh nghien
hanh trinh » canh tranh, hanh chinh
trinh nghe » trinh nghien, trinh he, trinh nha
nghiep tu » nghiep vu, nghiep vua, nghiep cua
duy hanh » duy khanh, duy nhanh, du hanh
su sach » so sach, vu sach
nghe du » nghe duc, nghe xu, nghe di
tu hoc » te hoc
du 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: (( su sach kinh nghiep tu hoc ) or ( duy hanh trinh nghe du hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach kinh nghiep tu hoc ) OR ( duy hanh trinh nghe du hoc )).
• Adding a wildcard symbol may retrieve word variants: (( su sach kinh nghiep tu hoc ) or ( duy hanh trinh nghe du hoc ))*.