Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
vu sach » vu bach, su sach, vu khach
hang di » hang doi, hang vi, hang dien
va hang » van hang, va nang, va lang
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
nang xa » lang xa, nang ma, mang xa
hieu va » hieu qua
di cua » dai cua, doi 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: vu sach y ((nang xa) OR (nang x)) hoi. ((hieu va) OR (lieu va)) pham thuc va hang di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y ((nang xa) or (nang x)) hoi. ((hieu va) OR (lieu va)) pham thuc va hang di cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) or (nang x)) hoi. ((hieu va) OR (lieu va)) pham thuc va hang di cua tre*.