Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
te sach » toc sach
van lam » van nam
xang xa » lang xa, mang xa, dang xay
ang xa » lang xa, mang xa, dang xay
luc va » duc va, tuc va
loc va » hoc va
va cua » va chua, via cua, ca cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((xang xa) OR (ang xa)) hoi. hieu van lam ((luc va) or (loc va)) hang va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((xang xa) OR (ang xa)) hoi. hieu van lam ((luc va) OR (loc va)) hang va cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((xang xa) OR (ang xa)) hoi. hieu van lam ((luc va) or (loc va)) hang va cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach y ((xang xa) OR (ang xa)) hoi. hieu van lam ((luc va) or (loc va)) hang va cua triet*.