Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
tu sach » thu sach, su sach, te sach
duc ban » duc tan, duc van, dua ban
cua tre » cuu tre, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
va dao » ca dao
ve dao » de dao, ve bao, te dao
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 hoi. hieu ((ve dao) OR (va dao)) duc ban thanh vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ((ve dao) OR (va dao)) duc ban thanh vai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu ((ve dao) OR (va dao)) duc ban thanh vai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu ((ve dao) OR (va dao)) duc ban thanh vai ((cua tre) or (cua te))*.