Perhaps you should try some spelling variations:
gianh hai » gianh lai, giang hai, thanh hai
nam thuoc » nam thuc, nam thu, nha thuoc
va gianh » va gian, van giang, va giai
cua tre » cua te, cuu tre, cua triet
hai cua » thai cua, dai cua, hoi cua
hieu ve » hieu va, hieu van
lai hoi » dai hoi, lai hoa, lai roi
mai hoi » mai khoi, dai hoi, mai doi
ky sang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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 sac ky sang ((mai hoi) OR (lai hoi)). hieu ve ((nam thuoc) OR (cam xuc)) va gianh hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky sang ((mai hoi) OR (lai hoi)). hieu ve ((nam thuoc) or (cam xuc)) va gianh hai cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sac ky sang ((mai hoi) OR (lai hoi)). hieu ve ((nam thuoc) or (cam xuc)) va gianh hai cua tre*.