Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
thai cua » than cua, tai cuc, tri cua
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cac tuc » cac toc, cac tu, cac tac
va hanh » van hanh, va thanh, va danh
va dan » ca dan, va dao, va dau

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 ky nang xa hoi. lieu va cac tuc ((va hanh) or (va dan)) thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. lieu va cac tuc ((va hanh) OR (va dan)) thai cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. lieu va cac tuc ((va hanh) or (va dan)) thai cua triet*.