Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet
van cham » van chat, van tham, va cham
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. thien van cham soc ((va hanh) OR (va danh)) di ((cua triet) OR (va triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. thien van cham soc ((va hanh) or (va danh)) di ((cua triet) OR (va triet))~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. thien van cham soc ((va hanh) or (va danh)) di ((cua triet) OR (va triet))*.