Perhaps you should try some spelling variations:
trinh thiet » trinh viet, trinh thi
hanh trinh » canh tranh, hanh chinh
nghiem tu » nghiep tu, nghiem su, nghiem te
toc sach » hoc sach, doc sach, thuoc sach
luu hanh » huu han
tu hoc » te hoc
ke hoc » te hoc, de hoc, ke ho
kinh » dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( toc sach kinh nghiem tu hoc ) or ( luu hanh trinh thiet ke hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( toc sach kinh nghiem tu hoc ) OR ( luu hanh trinh thiet ke hoc )).
• Adding a wildcard symbol may retrieve word variants: (( toc sach kinh nghiem tu hoc ) or ( luu hanh trinh thiet ke hoc ))*.