Perhaps you should try some spelling variations:
thuc xanh » thuc hanh, thuc thanh, thuc dan
cam thuc » am thuc, nam thuc, cam thu
su sach » so sach, vu sach
hanh de » hanh ve
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nang co » nang cao, nang doc, nang noi
co hoi » co hoc, co loi
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu bach)) y nang co hoi. hieu va cam thuc xanh ((hanh de) OR (hanh kem)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu bach)) y nang co hoi. hieu va cam thuc xanh ((hanh de) OR (hanh kem)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu bach)) y nang co hoi. hieu va cam thuc xanh ((hanh de) OR (hanh kem)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu bach)) y nang co hoi. hieu va cam thuc xanh ((hanh de) OR (hanh kem)) cua tre*.