Perhaps you should try some spelling variations:
world conference » working conference
conference aist » conference acisp, conference amast, conference alt
conference post » conference porto, conference icost, conference pact
aist racism » against racism, ageism racism, asian racism
post racism » post racist, post fascism, post racial

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( world conference aist racism 2001 ) OR ( world conference post racism 2001 ))".
• Adding a wildcard symbol may retrieve word variants: (( world conference aist racism 2001 ) OR ( world conference post racism 2001 ))*.