Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
thuc va » thuc vat, thuc dan, thuc day
dau dai » dat dai, sau dai, dau da
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
va dau » va dao
va co » vo co

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 ty nang ma hoi. hieu ((cao chat) OR (va co)) thuc va dau dai cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ma hoi. hieu ((cao chat) or (va co)) thuc va dau dai cua tre*.