Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
cua triet » cua viet, su triet, va triet
tay lang » tai lang, tay tang, tay quang
vu sach » vu bach, su sach, vu khach
qua cac » cua cac
cac ban » cac van, can ban, cac bai
lap cua » lai cua, tap cua, lam cua
y lang » o lang, _ lang, yen lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((y lang) OR (tay lang)) xa hoi. hieu qua cac ((cac ban) or (cac dan)) thanh lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((y lang) OR (tay lang)) xa hoi. hieu qua cac ((cac ban) OR (cac dan)) thanh lap cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((y lang) OR (tay lang)) xa hoi. hieu qua cac ((cac ban) or (cac dan)) thanh lap cua triet".
• Adding a wildcard symbol may retrieve word variants: vu sach ((y lang) OR (tay lang)) xa hoi. hieu qua cac ((cac ban) or (cac dan)) thanh lap cua triet*.