Perhaps you should try some spelling variations:
sach nham » sach nha, sach tham, sach han
nham nang » phap nang, cam nang, kha nang
cau thuc » cau truc, cuu thuc, cau phuc
can thuc » dan thuc, van thuc, cay thuc
banh kem » hanh kem, banh keo, ban kem
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
va banh » va ban, va danh, va hanh
kem cua » em cua, keo cua, diem cua

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 nham nang ((xa hoi) OR (ma hoa)). lieu va ((cau thuc) OR (can thuc)) va banh kem cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach nham nang ((xa hoi) or (ma hoa)). lieu va ((cau thuc) OR (can thuc)) va banh kem cua viet~".
• Adding a wildcard symbol may retrieve word variants: tu sach nham nang ((xa hoi) or (ma hoa)). lieu va ((cau thuc) OR (can thuc)) va banh kem cua viet*.