Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
lam duoc » nam duoc, luat duoc, lam thuoc
toc sach » hoc sach, doc sach, thuoc sach
danh vai » danh sai, doanh van, dang van
hieu van » hieu va, thien van, lieu va
danh va » doanh va, hanh va, anh va
duoc va » nuoc va, duc va, duoc ma
van lam » van nam
lang ha » long ha
ha hoi » hoa hoi, ha noi, xa hoi
y lang » o lang, _ lang, tay lang

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) OR (toc sach)) y lang ha hoi. hieu van lam duoc va ((danh vai) OR (danh va)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y lang ha hoi. hieu van lam duoc va ((danh vai) or (danh va)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y lang ha hoi. hieu van lam duoc va ((danh vai) or (danh va)) cua triet*.