This is the 13995th most frequent Polish word.
poszukiwano
"Poszukiwano" means "sought" or "searched for."
In this sentence, 'poszukiwano' is used in an impersonal form in the past tense to indicate that there was a general effort to seek or search for new energy sources. This construction is typical for Polish to express actions performed by unspecified entities.
W latach 80. poszukiwano nowych źródeł energii.
In the 1980s, new energy sources were sought.
Here, 'poszukiwano' expresses the searching activity performed by people in an impersonal manner. It follows Polish convention to describe actions focusing on the action itself rather than the agent.
Gdy zaginął pies, poszukiwano go przez wiele dni.
When the dog went missing, it was searched for over many days.
In this case, 'poszukiwano' is contextualized within the search for a specific person (the thief). It often accompanies details of who or what is being actively sought and can be complemented by additional information about the agents or methods.