Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, va triet
hanh tai » thanh tai, hang tai, han tai
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
cao duc » dao duc, cao suc, giao duc
va hanh » van hanh, va thanh, va danh
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thuoc sach)) ky nang xa hoi. lieu va cao duc va hanh tai ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) ky nang xa hoi. lieu va cao duc va hanh tai ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) ky nang xa hoi. lieu va cao duc va hanh tai ((cua triet) or (su triet))*.