Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh lap » thanh san, phan lap, thanh hai
tay lang » tai lang, tay tang, tay quang
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
qua cac » cua cac
cac cac » cac cach, ca cac, cac bac
cac ban » cac dan, cac van, can ban
y lang » o lang, _ lang, yen lang
lap su » lap du, lap tu, lai su

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 ((y lang) OR (tay lang)) xa hoi. hieu qua cac cac ban thanh lap su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y lang) OR (tay lang)) xa hoi. hieu qua cac cac ban thanh lap su triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((y lang) OR (tay lang)) xa hoi. hieu qua cac cac ban thanh lap su triet*.