Perhaps you should try some spelling variations:
ban hanh » ban hang
cham xuc » cam xuc, chat xuc, cham soc
sang tai » hang tai, sang tao, tang tai
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach ty, sach kem
hieu ve » hieu van
tai hoi » tai khoi, dai hoi, tai hai
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

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