Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cam thuc » am thuc, nam thuc, cam thu
thuc van » thuc vat, thuc dan, thuc va
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, dai cua, hoi cua
ve cam » ve cham, ve cac, va cam
vi cua » di 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: te sach _ lang xa hoi. hieu ve cam thuc van thanh ((vi cua) OR (((vai cua) OR (hai cua)))) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach _ lang xa hoi. hieu ve cam thuc van thanh ((vi cua) or (((vai cua) OR (hai cua)))) te~".
• Adding a wildcard symbol may retrieve word variants: te sach _ lang xa hoi. hieu ve cam thuc van thanh ((vi cua) or (((vai cua) OR (hai cua)))) te*.