Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lam » thanh lap, hanh kem, hanh va
hieu van » hieu va, thien van, lieu va
thu sach » tu sach, thuat sach, thuoc sach
lang van » dang van, tang van, hoang van
lang xa » lang ha, dang xay
lam cua » nam cua, lam chat
van bac » van ban, van bao, van hac
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va

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

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