This is the 4668th most frequent Turkish word.
bulup
"Having found" or "by finding."
In this sentence, 'bulup' is the gerund form of the verb 'bulmak' (to find) and is used to connect the action of finding with the following action of using.
Anahtarımı kaybettim ama onu bulup tekrar kullandım.
I lost my key, but I found it and used it again.
Here, 'bulup' serves to link the action of finding the book with the subsequent action of reading it, indicating a sequence.
Kitabı bulup okumaya başladım.
I found the book and started reading it.
The use of 'bulup' in this sentence connects finding the lost items with placing them in the cupboard, maintaining a logical flow between the two actions.