Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
dat cua » day cua, mat cua, dan cua
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
mang xa » lang xa, mang may, dang xay
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam

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: su sach ky ((mang xa) OR (nang ma)) hoi. hieu ve cam tuc van thanh ((dat cua) OR (dai cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((mang xa) or (nang ma)) hoi. hieu ve cam tuc van thanh ((dat cua) OR (dai cua)) triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((mang xa) or (nang ma)) hoi. hieu ve cam tuc van thanh ((dat cua) OR (dai cua)) triet*.