Perhaps you should try some spelling variations:
"volleyball at the 1992 summer olympic" » "volleyball at the 1992 summer olympics", "volleyball at the 1991 summer olympic", "volleyball at the 1993 summer olympic", "volleyball at the 1992 summary olympic"
"volleyball at the 1996 summer olympic" » "volleyball at the 1996 summer olympics", "volleyball at the 1991 summer olympic", "volleyball at the 1966 summer olympic", "volleyball at the 1993 summer olympic"

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: "((\"volleyball at the 1992 summer olympic\") OR (\"volleyball at the 1996 summer olympic\"))".
• Removing quotes may allow a broader search: (( volleyball at the 1992 summer olympic ) OR ( volleyball at the 1996 summer olympic )).
• Adding a wildcard symbol may retrieve word variants: (("volleyball at the 1992 summer olympic") OR ("volleyball at the 1996 summer olympic"))*.