Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh va » hanh vi
toc van » hoc van, toc san, tac van
cac toc » cac toi, cac nuoc, cac thoi
hieu ve » hieu va, hieu van
su sach » vu sach
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
so sach » so sanh, bo sach, co sach
ve cac » va cac, vien cac

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: ((su sach) OR (so sach)) ly nang xa hoi. hieu ve cac toc van ((hanh va) OR (hang va)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ly nang xa hoi. hieu ve cac toc van ((hanh va) OR (hang va)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ly nang xa hoi. hieu ve cac toc van ((hanh va) OR (hang va)) cua triet*.