Perhaps you should try some spelling variations:
"10 summer olympics" » "10 summer olympic", "10 summery olympics", "30 summer olympics", "10 summen olympics"
"1 summer olympics" » "1 summer olympic", "_ summer olympics", "a summer olympics", "2 summer olympics"
"15 summen olympic" » "15 summer olympic", "5 summen olympic", "11 summen olympic", "1.6 summen olympic"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("15 summen olympic") OR ((("10 summer olympics") OR ("1 summer olympics")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"15 summen olympic\") or (((\"10 summer olympics\") OR (\"1 summer olympics\"))))".
• Removing quotes may allow a broader search: (( 15 summen olympic ) or ((( 10 summer olympics ) OR ( 1 summer olympics )))).
• Adding a wildcard symbol may retrieve word variants: (("15 summen olympic") or ((("10 summer olympics") OR ("1 summer olympics"))))*.