Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
so sach » so sanh, co sach, hoc sach
xuc van » duc van, luc van, xuc ban
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
bo sach » co sach, hoc sach
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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 (bo sach)) ky ((nang xa) or (lang xa)) hoi. hieu ve cham xuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham xuc van hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) ky ((nang xa) or (lang xa)) hoi. hieu ve cham xuc van hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (bo sach)) ky ((nang xa) or (lang xa)) hoi. hieu ve cham xuc van hanh vi cua tre*.