Perhaps you should try some spelling variations:
ky trong » ly trong, ke trong, cay trong
ban hanh » ban hang
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
ve ham » ve cham, le ham, ve am
ham so » nam so, cham soc
so ban » sao ban, so bang, co ban
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: tu cac ((ky trong) OR (ky dang)) ma hoi. hieu ve ham so ban hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu cac ((ky trong) or (ky dang)) ma hoi. hieu ve ham so ban hanh vi cua tre*.