Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh vai » thanh van, thanh tai, thanh oai
thu sach » tu sach, thuat sach, thuoc sach
tang mai » tang ma, tang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
cua tre » cua te, cuu tre, cua triet
cham lo » cham o, cam lo, cham soc
hieu ve » hieu va, hieu van
sach 7 » sach y, sach 2
7 tang » 6 tang
cam o » cham o, cam lo, ca o

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach 7 tang mai khoi. hieu ve ((cham lo) or (cam o)) va ((thanh vai) or (thanh hai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach 7 tang mai khoi. hieu ve ((cham lo) OR (cam o)) va ((thanh vai) OR (thanh hai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach 7 tang mai khoi. hieu ve ((cham lo) or (cam o)) va ((thanh vai) or (thanh hai)) cua tre*.