Perhaps you should try some spelling variations:
trinh nghien » trinh nghe, kinh nghiem, trinh thiet
hanh trinh » canh tranh, hanh chinh
nghiem dau » nghiep dau, nghiem va, nghiem ban
nghiep vua » nghiep va, nghiep vu
nghien de » nghiem de, nghiep ke, nghiem d
tu sach » thu sach, su sach, te sach
de hoc » te hoc, du hoc, dien hoc
thuc » thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thuc hanh trinh nghien de hoc ) or ( tu sach thieu ((nghiem dau) or (nghiep vua)) hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thuc hanh trinh nghien de hoc ) OR ( tu sach thieu ((nghiem dau) OR (nghiep vua)) hoc )).
• Adding a wildcard symbol may retrieve word variants: (( thuc hanh trinh nghien de hoc ) or ( tu sach thieu ((nghiem dau) or (nghiep vua)) hoc ))*.