Perhaps you should try some spelling variations:
hieu van » thien van, lieu va
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va tinh » may tinh
tinh te » kinh te, tinh tu, tinh he
cua tre » cua te, cuu tre, cua triet
tu bai » tu ban, tu bat, te bai
bai ky » ban ky, sai ky, bac ky
te cua » tue cua, le cua, de 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 bai ky nang ma hoa. ((hieu ve) OR (((hieu van) OR (hieu va)))) am thuc va tinh te cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu bai ky nang ma hoa. ((hieu ve) or (((hieu van) OR (hieu va)))) am thuc va tinh te cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu bai ky nang ma hoa. ((hieu ve) or (((hieu van) OR (hieu va)))) am thuc va tinh te cua tre*.