Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
dang cay » dang xay, dang ca, dang cac
cay phoi » cap phoi, tay hoi, cay cho
cham cuu » chat cua
dinh vi » dinh ve, dinh viet, dinh tri
danh vi » hanh vi, danh di, danh va
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ty dang » ty xang, ky dang, ty hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ty dang cay phoi. hieu ve ((cham cuu) or (cap cuu)) ban ((danh vi) or (dinh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty dang cay phoi. hieu ve ((cham cuu) OR (cap cuu)) ban ((danh vi) OR (dinh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty dang cay phoi. hieu ve ((cham cuu) or (cap cuu)) ban ((danh vi) or (dinh vi)) cua tre*.