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