Perhaps you should try some spelling variations:
sach kem » hanh kem
dang cay » dang xay, dang ca, dang cac
cay phoi » cap phoi, tay hoi, cay cho
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
di su » doi su, ki su, de su
da su » dan su, dat su, va su
ve am » va am

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 kem) OR (sach y)) dang cay phoi. hieu ve am thuc va danh ((di su) OR (da su)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach kem) or (sach y)) dang cay phoi. hieu ve am thuc va danh ((di su) OR (da su)) triet~".
• Adding a wildcard symbol may retrieve word variants: vu ((sach kem) or (sach y)) dang cay phoi. hieu ve am thuc va danh ((di su) OR (da su)) triet*.