Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cam thuc » am thuc, nam thuc, cam thu
dang xay » dang van, van xay
thuc van » thuc vat, thuc dan, thuc va
hai cua » thai cua, hoi cua, lai cua
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
sach lo » sach dao, sach doi, sach hoi
ve cam » ve cham, ve cac, va cam
sach o » sac o, sach y, mach o

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: toc ((sach o) OR (sach lo)) dang xay hoi. hieu ve cam thuc van thanh ((hai cua) OR (dai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach o) OR (sach lo)) dang xay hoi. hieu ve cam thuc van thanh ((hai cua) or (dai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: toc ((sach o) OR (sach lo)) dang xay hoi. hieu ve cam thuc van thanh ((hai cua) or (dai cua)) tre*.