'extensively searched' is correct and usable in written English.
You can use it to describe an amount of searching or exploration that is done thoroughly and often. For example: The scene of the crime had been extensively searched by the police.
When a tagged bird abruptly stopped transmitting data, research staff extensively searched around its last-known location.
A woman who was extensively searched when she returned to the United States from abroad sued the federal government yesterday, saying customs agents singled her out because she is a black woman.
Devon and Cornwall Police said a 20-mile stretch of coastline - 10 miles either side of the 18-year-old's home at Newton Ferrers - has been extensively searched as well as inland areas with the help of a range of groups and emergency services.
ProtonMail says the plane, United Airlines Flight 949, was quarantined upon arrival in San Francisco and "extensively searched".
These items included for example "the degree to which the firm extensively searched for possible responses" and "the degree to which the firm thoroughly examined multiple explanations for the problem or opportunity?" (Miller et al. 1998).
In this review, the literature was extensively searched in order to study and compile together the complications of CT of the shoulder and present it in a clear form to ease the understanding for all the professionals involved in the management of this disorder.
"Hamas should extensively search the scope of penetration within its ranks that has led to the assassination of Mabhouh and other Hamas leaders," a spokesman in Ramallah told Reuters.
But Paine didn't extensively search the records, mindful of customers' privacy.
Microorganisms required for CBP are not commercially available; although many research labs and companies are extensively searching.
The Namib Desert Horse travels extensively, searching for food, water and shelter from the climate and insects.
The systematic review will extensively search decision models for evaluating pharmacogenetic and pharmacogenomic tests.
