Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
gia hanh » gia thanh, giao hanh, gia anh
thuc gia » thuc giai, thue gia, thuc dia
so sach » bo sach, co sach, hoc sach
cua tre » cuu tre, cua triet, dua tren
va cach » va cac
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
so sanh » do sanh
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang
cua te » cua tu

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

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