Perhaps you should try some spelling variations:
thanh dan » thanh san, thanh van, thanh dat
thi hanh » thi thanh
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, su tien, ve triet
te sach » toc sach
ty hang » ly hang, ty xang, thi hang
van coc » van hoc, van loc, van co
luc va » duc va, tuc va, loc va
dan su » dang su
x hoi » xa hoi, o hoi, x ho

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 ((ty hang) or (thi hanh)) x hoi. hieu van coc luc va thanh dan su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty hang) OR (thi hanh)) x hoi. hieu van coc luc va thanh dan su triet.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty hang) or (thi hanh)) x hoi. hieu van coc luc va thanh dan su triet*.