Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham duc » pham duc, cham soc, pham duy
va thanh » gia thanh, va tinh, le thanh
so sach » so sanh, bo sach, co sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
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: so sach tu nang xa hoi. hieu van cham duc ((va thanh) OR (ban thanh)) di cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach tu nang xa hoi. hieu van cham duc ((va thanh) OR (ban thanh)) di cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach tu nang xa hoi. hieu van cham duc ((va thanh) OR (ban thanh)) di cua triet*.