Perhaps you should try some spelling variations:
"18 summer olympics" » "18 summer olympic", "10 summer olympics", "15 summer olympics", "19 summer olympics"
"17 summer olympics" » "17 summer olympic", "10 summer olympics", "15 summer olympics", "19 summer olympics"
"1 summer olympics" » "1 summer olympic", "_ summer olympics", "a summer olympics", "2 summer olympics"

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: (((("18 summer olympics") OR ("17 summer olympics"))) OR ("1 summer olympics")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"18 summer olympics\") OR (\"17 summer olympics\"))) or (\"1 summer olympics\"))".
• Removing quotes may allow a broader search: (((( 18 summer olympics ) OR ( 17 summer olympics ))) or ( 1 summer olympics )).
• Adding a wildcard symbol may retrieve word variants: (((("18 summer olympics") OR ("17 summer olympics"))) or ("1 summer olympics"))*.