Perhaps you should try some spelling variations:
ninh viet » sinh vien, anh viet
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
van ninh » van minh, van dinh, van binh
su triet » su tien, ve triet
cao hoi » cau hoi, co hoi, cao hoc
xuc van » duc van, luc van, vuc van
su viet » so viet
va cam » va cham, va cac, va cao

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) or (doc sach)) ky nang cao hoi. lieu va cam xuc van ninh viet ((su triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ky nang cao hoi. lieu va cam xuc van ninh viet ((su triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (doc sach)) ky nang cao hoi. lieu va cam xuc van ninh viet ((su triet) or (su viet))*.