Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
toc sach » hoc sach, doc sach, thuoc sach
dua ban » dia ban, cua ban, qua ban
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
ve cham » va cham, vu cham, ve chim
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky tang ma hoa. hieu ((ve cham) OR (ve chat)) dua ban ((thanh lai) or (thanh san)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky tang ma hoa. hieu ((ve cham) OR (ve chat)) dua ban ((thanh lai) OR (thanh san)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky tang ma hoa. hieu ((ve cham) OR (ve chat)) dua ban ((thanh lai) or (thanh san)) cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ky tang ma hoa. hieu ((ve cham) OR (ve chat)) dua ban ((thanh lai) or (thanh san)) cua tre*.