Perhaps you should try some spelling variations:
cuoi thuc » choi thuc, cuu thuc, co thuc
trinh vi » trinh va, trinh ve, trinh viet
trong xa » trong xay, trong ca, trong xu
thuc va » thuc vat, thuc dan, thuc day
tinh vi » tinh voi, tinh va, dinh vi
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
hieu le » hieu ve, hieu he, hieu ly
tang xa » trang xa, tang ma, lang xa
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty ((tang xa) or (trong xa)) hoi. hieu le cuoi thuc va ((tinh vi) or (trinh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty ((tang xa) OR (trong xa)) hoi. hieu le cuoi thuc va ((tinh vi) OR (trinh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ty ((tang xa) or (trong xa)) hoi. hieu le cuoi thuc va ((tinh vi) or (trinh vi)) cua tre*.