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

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: "((((((((\"1989 iaaf world op\") OR (\"1989 iaaf world _\"))) OR (\"1989 iaaf wereld en\"))) OR (((((\"1989 imf wereld op\") OR (\"1989 imf wordt op\"))) OR (\"1989 imf wereld _\"))))) OR (\"1989 baas wordt de\"))~".
• Removing quotes may allow a broader search: (((((((( 1989 iaaf world op ) OR ( 1989 iaaf world _ ))) OR ( 1989 iaaf wereld en ))) OR ((((( 1989 imf wereld op ) OR ( 1989 imf wordt op ))) OR ( 1989 imf wereld _ ))))) OR ( 1989 baas wordt de ))~.
• Adding a wildcard symbol may retrieve word variants: (((((((("1989 iaaf world op") OR ("1989 iaaf world _"))) OR ("1989 iaaf wereld en"))) OR ((((("1989 imf wereld op") OR ("1989 imf wordt op"))) OR ("1989 imf wereld _"))))) OR ("1989 baas wordt de"))*.