Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
tu sach » thu sach, su sach, te sach
cua tre » cuu tre, cua triet, dua tren
hieu ve » hieu va, hieu van
duc ban » duc tan, duc van, duc man
sach ky » sac ky, sach y, sach ty
dua ban » dia ban, cua ban, qua ban
cua te » cua tu
ve cac » va cac, vien cac
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 cac ((duc ban) OR (dua 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 cac ((duc ban) OR (dua 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 cac ((duc ban) OR (dua ban)) thanh vai ((cua tre) or (cua te))*".