Perhaps you should try some spelling variations:
thoi nghiem » thi nghiem, khoi nghiep, thuc nghiem
nghiep dai » nghiep tai, nghiep bai, nghiep va
hanh thoi » hanh thuoc, nhanh thai, hanh noi
tien hoc » tin hoc, dien hoc, tien hon
tien hoa » dien hoa, trien hoat, tien va
tu hanh » du hanh, lu hanh, thuc hanh
khach » khac, khanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( vay khach (khoi or khoa) nghiep dai hoc ) or ( tu hanh thoi nghiem ((tien hoc) OR (tien hoa)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vay khach (khoi OR khoa) nghiep dai hoc ) OR ( tu hanh thoi nghiem ((tien hoc) OR (tien hoa)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( vay khach (khoi or khoa) nghiep dai hoc ) or ( tu hanh thoi nghiem ((tien hoc) OR (tien hoa)) ))".
• Adding a wildcard symbol may retrieve word variants: (( vay khach (khoi or khoa) nghiep dai hoc ) or ( tu hanh thoi nghiem ((tien hoc) OR (tien hoa)) ))*.