Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
toc sach » hoc sach, doc sach, thuoc sach
va triet » va thiet, va trien, ve triet
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
cua te » cua tu
cua cu » cua chu, cua cau, cua su

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. hieu va pham thuc va hanh vi ((((cua te) or (cua cu))) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. hieu va pham thuc va hanh vi ((((cua te) OR (cua cu))) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. hieu va pham thuc va hanh vi ((((cua te) or (cua cu))) or (va triet))*.