Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu cao » chieu cao, hieu cac, hieu ca
cau thuc » cau truc, cuu thuc, can thuc
vat danh » va danh, van danh, luat danh
danh dai » danh dau, danh di, danh sai
sach ky » sac ky, sach y, sach ty
mang xa » lang xa, mang may, dang xay
nang ma » tang ma, sang ma, nang cao
cao cau » cao cap, co cau, tao cau
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: thu sach ky ((mang xa) or (nang ma)) hoi. hieu cao cau thuc vat danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((mang xa) OR (nang ma)) hoi. hieu cao cau thuc vat danh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ky ((mang xa) or (nang ma)) hoi. hieu cao cau thuc vat danh dai cua tre*.