Perhaps you should try some spelling variations:
cach thuc » cac thu
dan hanh » dang hanh, dan khanh, dan thanh
anh thuc » am thuc, dan thuc, anh tu
su sach » so sach, vu sach
hanh du » hanh dua, hanh tu, hanh de
hieu va » lieu va, hieu qua
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
du cua » duy cua, dau cua, dum cua
x hoi » xa hoi, o hoi, x ho

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: ((su sach) OR (so sanh)) y nang x hoi. hieu va ((cach thuc) OR (anh thuc)) dan hanh du cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) y nang x hoi. hieu va ((cach thuc) OR (anh thuc)) dan hanh du cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) y nang x hoi. hieu va ((cach thuc) OR (anh thuc)) dan hanh du cua tre*.