Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
chat soc » cham soc, chat hoc, chat doc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
va kinh » va tinh, qua kinh
va hanh » van hanh, va thanh, va danh

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 ky nang xa hoi. hieu va chat soc ((va kinh) or (va hanh)) dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu va chat soc ((va kinh) OR (va hanh)) dai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu va chat soc ((va kinh) or (va hanh)) dai cua triet*.