Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh te » thanh ve, thanh de, thanh le
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
qua cac » cua cac
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
te cua » tue cua, le cua, de cua

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 x ho. hieu qua cac ((xuc va) or (luc va)) thanh te cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x ho. hieu qua cac ((xuc va) OR (luc va)) thanh te cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x ho. hieu qua cac ((xuc va) or (luc va)) thanh te cua triet*.