Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
so sanh » do sanh
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, xuc ban
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
va cam » va cham, va cac, va cao
x hoi » o hoi, x ho, 5 hoi

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) OR (xa hoi)). hieu va cam xuc van 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) OR (xa hoi)). hieu va cam xuc van hanh vai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) ky nang ((x hoi) OR (xa hoi)). hieu va cam xuc van hanh vai cuu tre*".