Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
hieu va » lieu va, hieu qua
hanh ca » hanh cac, hanh cat, hanh cua
va cau » van cau, va cac, va dau
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang cao hoi. hieu va cau ((xuc va) or (tuc va)) hanh ca cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang cao hoi. hieu va cau ((xuc va) OR (tuc va)) hanh ca cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang cao hoi. hieu va cau ((xuc va) or (tuc va)) hanh ca cua triet*.