Perhaps you should try some spelling variations:
"1989 iaaf wordt op" » "1989 baas wordt op" (Expand Search), "1989 iaaf wordt de" (Expand Search), "1989 iaaf wordt er" (Expand Search)
"1989 imf wereld op" » "1989 imf wereld en" (Expand Search)
"1989 iaaf world op" » "1989 iaaf world we" (Expand Search)
"1989 imf word je" » "1989 imf wordt de" (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 imf word je") OR ("1989 imf world wide"))) OR ((("1989 imf wereld op") OR ("1989 imf wereld _"))))))) OR ("1989 iaaf world _"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"1989 iaaf world op\") OR (\"1989 iaaf wordt op\"))) OR (((((\"1989 imf word je\") OR (\"1989 imf world wide\"))) OR (((\"1989 imf wereld op\") OR (\"1989 imf wereld _\"))))))) OR (\"1989 iaaf world _\"))".
• Removing quotes may allow a broader search: (((((( 1989 iaaf world op ) OR ( 1989 iaaf wordt op ))) OR ((((( 1989 imf word je ) OR ( 1989 imf world wide ))) OR ((( 1989 imf wereld op ) OR ( 1989 imf wereld _ ))))))) OR ( 1989 iaaf world _ )).
• Adding a wildcard symbol may retrieve word variants: (((((("1989 iaaf world op") OR ("1989 iaaf wordt op"))) OR ((((("1989 imf word je") OR ("1989 imf world wide"))) OR ((("1989 imf wereld op") OR ("1989 imf wereld _"))))))) OR ("1989 iaaf world _"))*.