Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
van cham » van chat, van tham, va cham
hang di » hang doi, hang vi, hang dien
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
loc va » luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang xa hoi. thien van cham ((loc va) or (hoc va)) hang di ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. thien van cham ((loc va) OR (hoc va)) hang di ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. thien van cham ((loc va) or (hoc va)) hang di ((cua triet) OR (su triet))*".