Perhaps you should try some spelling variations:
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua
thuc va » thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
tu cai » tu cac, tu can, tu bai
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua
va am » va lam, va cam

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 cai ((ky tang) OR (ky dang)) ma hoi. hieu va am ((thuc va) OR (thuc vat)) hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cai ((ky tang) OR (ky dang)) ma hoi. hieu va am ((thuc va) or (thuc vat)) hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu cai ((ky tang) OR (ky dang)) ma hoi. hieu va am ((thuc va) or (thuc vat)) hanh vi cua tre*.