Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh di » thanh doi, thanh de, thanh do
hieu ve » hieu va, hieu van
vuc van » duc van, luc van, thuc van
cam vuc » cam xuc
tang ma » tang van
sach ky » sac ky, sach ty, sach kem
ve cam » ve cham, ve cac, va cam
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: tu ((sach ky) OR (sach y)) ((mang may) OR (tang ma)) hoi. hieu ve cam vuc van thanh di cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach y)) ((mang may) or (tang ma)) hoi. hieu ve cam vuc van thanh di cua vat~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach y)) ((mang may) or (tang ma)) hoi. hieu ve cam vuc van thanh di cua vat*.