Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
may hoi » may thoi, tay hoi, mai hoi
tuc ban » thuc ban, truc ban, tu ban
cuu tre » cua tre, cau tren, cau treo
sach 7 » sach y, sach 2
ve cai » ve tai, ve cau
va cai » va cac, va bai, va dai
ve cac » va cac, vien cac
vi cuu » vi luu, vinh cuu
mang » nang, dang, bang

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 7 mang may hoi. hieu ((((ve cai) OR (va cai))) OR (ve cac)) tuc ban hanh vi cuu tre~.
• Adding a wildcard symbol may retrieve word variants: tu sach 7 mang may hoi. hieu ((((ve cai) or (va cai))) or (ve cac)) tuc ban hanh vi cuu tre*.