Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
bo sach » co sach, hoc sach
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, xuc ban
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
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: bo sach ky ((nang xa) or (lang xa)) hoi. ((hieu ve) OR (hieu va)) cham xuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky ((nang xa) OR (lang xa)) hoi. ((hieu ve) OR (hieu va)) cham xuc van hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach ky ((nang xa) or (lang xa)) hoi. ((hieu ve) OR (hieu va)) cham xuc van hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: bo sach ky ((nang xa) or (lang xa)) hoi. ((hieu ve) OR (hieu va)) cham xuc van hanh vi cua tre*.