Perhaps you should try some spelling variations:
"Türkiye Ekonomik durum 1918-1989" » "Türkiye Ekonomik durum 1945-1989" (Expand Search), "Türkiye Ekonomik durum 1960-1989" (Expand Search)
"turkiye ekonomik durum 1980-1989" » "turkiye ekonomik durum 1960-1989" (Expand Search), "turkiye ekonomik durum 1990-1989" (Expand Search), "turkiye ekonomik durum 1981-1989" (Expand Search)
"turkiye ekonomik durum 1989-1989" » "turkiye ekonomik durum 1979-1989" (Expand Search), "turkiye ekonomik durum 1981-1989" (Expand Search), "turkiye ekonomik durum 1982-1989" (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("Türkiye Ekonomik durum 1918-1989") OR ("turkiye ekonomik durum 1980-1989"))) OR ("turkiye ekonomik durum 1989-1989"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"Türkiye Ekonomik durum 1918-1989\") OR (\"turkiye ekonomik durum 1980-1989\"))) OR (\"turkiye ekonomik durum 1989-1989\"))".
• Removing quotes may allow a broader search: (((( Türkiye Ekonomik durum 1918-1989 ) OR ( turkiye ekonomik durum 1980-1989 ))) OR ( turkiye ekonomik durum 1989-1989 )).
• Adding a wildcard symbol may retrieve word variants: (((("Türkiye Ekonomik durum 1918-1989") OR ("turkiye ekonomik durum 1980-1989"))) OR ("turkiye ekonomik durum 1989-1989"))*.

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