The part of the sentence "has searched" is correct and usable in written English.
It can be used to describe an action that was completed in the past. For example, "She has searched everywhere, but she can't find the keys."
Since then, he has searched every book he owns.
Jeremy Hunt has searched earnestly for an answer.
His father has searched for work all day without success.
California has searched for ways to shrink its incarcerated population.
Although Stoneley has searched, he doesn't believe a prison photograph of Wilde exists.
Mr. Chanos said that as the market has plummeted, he has searched for bargains.
In the past she has searched for maternal mentors and experimented with women.
Throughout his career, Agassi has searched for deep meaning; Philippoussis is starting the same journey.
Portland Coach Nate McMillan has searched for historical comparisons to Oden's circumstances.
He has searched nationwide for his next contract, willing to relocate.
The Oslo killer has searched history, ideologies and racism for legitimacy.
