Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
sach ty » sach y, sach thu, xach tay
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
sach tu » sach thu, cach tu, sach uu
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu cua
va cam » va cham, va cac, va cao

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 ty) OR (sach tu)) lang xa hoi. hieu va cam tuc van hanh ((di cua) OR (de cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach tu)) lang xa hoi. hieu va cam tuc van hanh ((di cua) OR (de cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach tu)) lang xa hoi. hieu va cam tuc van hanh ((di cua) OR (de cua)) tre*.