Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van hac » van hoc, van ha, van hai
xuc van » duc van, luc van, vuc van
hanh va » hang va, hanh vi
va cua » va chua, via cua, ca 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 ((van hac) or (van ban)) xuc van hanh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu ((van hac) OR (van ban)) xuc van hanh va cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu ((van hac) or (van ban)) xuc van hanh va cua triet*.