Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
thu sach » tu sach, thuat sach, thuoc sach
thuc dan » thuc hanh, hoc dan, thuc vat
su triet » su viet, su tien, ve triet
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
va tham » van tham, va cham, va thanh
thuc va » thuc vat, thuc day

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang ma hoa. lieu va tham ((thuc va) or (thuc dan)) hanh vi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang ma hoa. lieu va tham ((thuc va) OR (thuc dan)) hanh vi ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang ma hoa. lieu va tham ((thuc va) or (thuc dan)) hanh vi ((cua triet) or (su triet))*.