Perhaps you should try some spelling variations:
"czechoslovak border of sciences" » "czechoslovak road of sciences", "czechoslovak academy of sciences", "czechoslovakia river of sciences"
"czechoslovak power of sciences" » "czechoslovak new of sciences", "czechoslovak road of sciences", "czechoslovak view of sciences"

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: "((\"czechoslovak border of sciences\") OR (\"czechoslovak power of sciences\"))".
• Removing quotes may allow a broader search: (( czechoslovak border of sciences ) OR ( czechoslovak power of sciences )).
• Adding a wildcard symbol may retrieve word variants: (("czechoslovak border of sciences") OR ("czechoslovak power of sciences"))*.