Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van chat » cao chat
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 cham » va chat, va tham
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh

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 cham) or (van chat)) tuc ((va danh) OR (va dinh)) tri cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((va cham) OR (van chat)) tuc ((va danh) OR (va dinh)) tri cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu ((va cham) or (van chat)) tuc ((va danh) OR (va dinh)) tri cua triet*".