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

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 (luc va))) or (hoc va)) hang di cua 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 (luc va))) OR (hoc va)) hang di cua 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 (luc va))) or (hoc va)) hang di cua triet*".