Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
vai cuu » vai cua
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
so sanh » do sanh
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
va cam » va cham, va cac, va cao
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: ((su sach) or (so sanh)) ky nang x hoi. hieu va cam ((xuc va) or (tuc va)) hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) ky nang x hoi. hieu va cam ((xuc va) OR (tuc va)) hanh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) ky nang x hoi. hieu va cam ((xuc va) or (tuc va)) hanh vai cuu tre*.