This is the 13605th most frequent Turkish word.
kuramadıklarını
"Things they/you could not establish/set up."
The word 'kuramadıklarını' here refers to the inability to establish or create something specific, namely the conceptual 'dream world.'
O sırada hayal ettikleri dünyayı kuramadıklarını anlamışlardı.
At that moment, they realized they couldn't establish the world they dreamed of.
In this usage, 'kuramadıklarını' conveys their failure to set up or outline their specific plans.
Toplantıda planlarını kuramadıklarını itiraf ettiler.
They admitted during the meeting that they couldn't plan as intended.
Here, 'kuramadıklarını' emphasizes the lack of success in re-establishing something significant, namely the company.