This is the 177th most frequent Polish word.
nowych
"Nowych" means "new" (genitive or accusative plural form) in English.
The word 'nowych' in the context of this sentence is the genitive plural form of 'nowy' agreeing with the noun 'książek' (books), which is also in the genitive plural case, forming a grammatically correct noun phrase to express possession or quantity.
Kupiłem kilka nowych książek.
I bought a few new books.
In this example, 'nowych' functions as the genitive plural form of 'nowy,' associated with 'pomysłów' (ideas) which is in the genitive plural case, often used after the adjective 'pełen' (full of) to describe a state or quality.
Jestem pełen nowych pomysłów po tym spotkaniu.
I am full of new ideas after this meeting.
Here, 'nowych' serves as the accusative plural form of 'nowy,' modifying 'pracowników' (employees) due to the action verb 'szukamy' (we are looking for), aligning to indicate the direct object in the sentence.