Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
su triet » su viet, su tien, ve triet
thanh ki » thanh kim, thanh ky, thanh ke
xuc van » duc van, luc van, vuc van
ve cham » va cham, ve chat, vu cham
tu sach » thu sach, su sach, te sach
le hong » he thong
le hang » le hoang, le thang, le tang
ca hoi » cau hoi, cua hoi, xa hoi
ve cam » ve cac, va cam, ve cai
ki su » ky su

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: tu sach ((le hang) OR (le hong)) ca hoi. hieu ((ve cam) OR (ve cham)) xuc van thanh ki su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((le hang) or (le hong)) ca hoi. hieu ((ve cam) OR (ve cham)) xuc van thanh ki su triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((le hang) or (le hong)) ca hoi. hieu ((ve cam) OR (ve cham)) xuc van thanh ki su triet*.