Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
ve cham » ve chat, vu cham, ve chim
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
va kinh » va tinh, qua kinh
hai cua » thai cua, dai cua, hoi cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang xa hoi. hieu ((ve cham) OR (va cham)) soc ((va hanh) or (va kinh)) hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu ((ve cham) OR (va cham)) soc ((va hanh) OR (va kinh)) hai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu ((ve cham) OR (va cham)) soc ((va hanh) or (va kinh)) hai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu ((ve cham) OR (va cham)) soc ((va hanh) or (va kinh)) hai cua triet*.