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