Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dong dan » dong danh, duong dan, dong san
sach ty » sach tu, sach thu, xach tay
lang xa » lang ha, dang xay, lang van
van cac » van hac, van cau, van bac
cac toc » cac toi, cac nuoc, cac thoi
toc van » hoc van, toc san, tac van
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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 y)) lang xa hoi. hieu van cac toc van dong dan ((cua tu) OR (cua su))~.
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach y)) lang xa hoi. hieu van cac toc van dong dan ((cua tu) or (cua su))*.