Perhaps you should try some spelling variations:
"1989 iaaf world op" » "1989 imf world op" (Expand Search), "1989 iaaf world _" (Expand Search)
"1989 iaaf world we" » "1989 imf world we" (Expand Search), "1989 iaaf world wide" (Expand Search), "1989 iaaf world _" (Expand Search)
"1989 iaaf wordt op" » "1989 baas wordt op" (Expand Search), "1989 iaaf wordt er" (Expand Search)
"1989 iaaf wordt de" » "1989 baas wordt de" (Expand Search)
"1989 iaaf wereld op" » "1989 iaaf wereld en" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("1989 iaaf world op") OR ("1989 iaaf wordt op"))) OR ((("1989 iaaf world we") OR ((("1989 iaaf word je") OR ("1989 iaaf wordt de"))))))) OR ((("1989 iaaf wereld op") OR ("1989 iaaf wereld _"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"1989 iaaf world op\") OR (\"1989 iaaf wordt op\"))) OR (((\"1989 iaaf world we\") OR (((\"1989 iaaf word je\") OR (\"1989 iaaf wordt de\"))))))) OR (((\"1989 iaaf wereld op\") OR (\"1989 iaaf wereld _\"))))".
• Removing quotes may allow a broader search: (((((( 1989 iaaf world op ) OR ( 1989 iaaf wordt op ))) OR ((( 1989 iaaf world we ) OR ((( 1989 iaaf word je ) OR ( 1989 iaaf wordt de ))))))) OR ((( 1989 iaaf wereld op ) OR ( 1989 iaaf wereld _ )))).
• Adding a wildcard symbol may retrieve word variants: (((((("1989 iaaf world op") OR ("1989 iaaf wordt op"))) OR ((("1989 iaaf world we") OR ((("1989 iaaf word je") OR ("1989 iaaf wordt de"))))))) OR ((("1989 iaaf wereld op") OR ("1989 iaaf wereld _"))))*.