Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhanh tinh » nhanh thanh, nhan sinh
nghiep tu » nghiep vua, nghiep cua, nghiep tai
nghiep vu » nghiep va
duy nhanh » duy khanh, day nhanh, duy anh
tinh nghe » trinh nghe, anh nghe, hanh nghe
so hanh » so sanh, so danh, co hanh
nghe du » nghe duc, nghe xu, nghe di
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: (( so hanh trinh ((nghiep tu) OR (nghiep vu)) hoc ) or ( duy nhanh tinh nghe du hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so hanh trinh ((nghiep tu) OR (nghiep vu)) hoc ) OR ( duy nhanh tinh nghe du hoc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( so hanh trinh ((nghiep tu) OR (nghiep vu)) hoc ) or ( duy nhanh tinh nghe du hoc ))".
• Adding a wildcard symbol may retrieve word variants: (( so hanh trinh ((nghiep tu) OR (nghiep vu)) hoc ) or ( duy nhanh tinh nghe du hoc ))*.