Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, v nang
va cao » va cac, va co, va dao
xuc va » tuc va, luc va, xac va
cua te » cua tu

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: tu sach y nang x ho. hieu va cao ((xuc va) OR (duc va)) thanh dat ((cua triet) OR (cua te))~.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x ho. hieu va cao ((xuc va) or (duc va)) thanh dat ((cua triet) or (cua te))*.