Perhaps you should try some spelling variations:
kho tang » cao tang
ky tang » ky nang, ky dang, ky trong
so bang » so dang, so lang, co bang
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
so ban » sao ban, co ban, lo 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 tang) OR (kho tang)) ma hoi. hieu ve cham ((so ban) OR (so bang)) hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ((ky tang) or (kho tang)) ma hoi. hieu ve cham ((so ban) OR (so bang)) hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu cac ((ky tang) or (kho tang)) ma hoi. hieu ve cham ((so ban) OR (so bang)) hanh vi cua tre*.