Perhaps you should try some spelling variations:
ban hanh » ban hang
tang tai » hang tai, dung tai, sang tao
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cuu tre, cua triet
tai hoi » tai khoi, dai hoi, tai hai
ve ham » ve cham, ve am
le ham » le pham, le ha, le hai
so ban » sao ban, so bang, co ban
vi cua » vai cua, di cua
ve ha » ve nha, ve hoa, vu ha

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: tu cac ky tang tai hoi. hieu ((((ve ham) OR (ve ha))) OR (le ham)) so ban hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky tang tai hoi. hieu ((((ve ham) OR (ve ha))) or (le ham)) so ban hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu cac ky tang tai hoi. hieu ((((ve ham) OR (ve ha))) or (le ham)) so ban hanh vi cua tre*.