Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
van hanh » van thanh, ban hanh, van anh
tu cach » tu cac
hanh di » hanh vi, hanh de, hang di
soc van » hoc van, oc van, sac van
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
so sach » so sanh, bo sach, co sach
di cuu » di cau, di cua, dinh cuu
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: ((tu cach) or (so sach)) ky nang x hoi. ((hieu va) or (hieu van)) cham soc van hanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (so sach)) ky nang x hoi. ((hieu va) OR (hieu van)) cham soc van hanh di cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (so sach)) ky nang x hoi. ((hieu va) or (hieu van)) cham soc van hanh di cuu tre*.