Perhaps you should try some spelling variations:
"working conference against rabies 2001" » "working inference against rabies 2001", "working conference amast rabies 2001", "working conference aist rabies 2001", "working conference against racism 2001", "working conference against navies 2001", "working conference against rabies 1001", "working conference against rabies 201", "working conference against rabies 2301"
"working conference against rabies 20" » "working inference against rabies 20", "working conference amast rabies 20", "working conference aist rabies 20", "working conference against racism 20", "working conference against rabies 10", "working conference against rabies 2", "working conference against rabies 23"

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: "((\"working conference against rabies 2001\") OR (\"working conference against rabies 20\"))".
• Removing quotes may allow a broader search: (( working conference against rabies 2001 ) OR ( working conference against rabies 20 )).
• Adding a wildcard symbol may retrieve word variants: (("working conference against rabies 2001") OR ("working conference against rabies 20"))*.