Perhaps you should try some spelling variations:
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 » sach y, sach ty, sach kem
hieu ca » hieu cac, hieu cua, hieu va
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
ca cau » cua cau, cac cau, can cau
x hoi » xa hoi, o hoi, x ho

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) or (sac ky)) nang x hoi. hieu ca cau thuc vat danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sac ky)) nang x hoi. hieu ca cau thuc vat danh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) or (sac ky)) nang x hoi. hieu ca cau thuc vat danh dai cua tre*.