Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh van » thanh san, thanh toan, thanh phan
cua triet » cua viet, su triet, va triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
thi van » thi lan, thi hanh, thi nang
cac dac » cac dan, cac dai, cac bac
dac ban » cac ban, dac san, duc ban
van cua » vang cua, ban cua, dan cua

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 ky nang xa hoi. ((thien van) OR (thi van)) cac dac ban thanh van cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. ((thien van) OR (thi van)) cac dac ban thanh van cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. ((thien van) OR (thi van)) cac dac ban thanh van cua triet*.