Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
cua tre » cua te, cuu tre, dua tren
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
ve chao » ve chat, ve cham, ve cho
te sach » toc sach
lang xa » lang ha, lang van
hieu ve » hieu va, hieu van
sach v » sach va, sach y, sach 2
xu va » xu van, tu va, su va

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 v ((lang xa) OR (dang xay)) hoi. hieu ve chao xu va danh vi ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v ((lang xa) OR (dang xay)) hoi. hieu ve chao xu va danh vi ((cua tre) or (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: te sach v ((lang xa) OR (dang xay)) hoi. hieu ve chao xu va danh vi ((cua tre) or (cua triet))*.