"covered thoroughly" is a correct and usable phrase in written English.
It means that something has been completely and comprehensively addressed or examined. Example: The report covered the topic of climate change thoroughly, leaving no stone unturned in its analysis of the issue.
"From People's Daily to China Central Television, the story is being covered thoroughly, without trying to put a positive spin on it".
A Microsoft spokesman, Jim Cullinan, said company lawyers had decided that procedural questions were covered thoroughly in their filings with the court, and so the oral arguments would be dedicated to discussion of the legal issues.
The first was Apple's iPhone announcement, which we covered thoroughly (and perhaps exhaustively).
The design parameters are covered thoroughly, as are environmental considerations, power feeding topology and equipment design, and localization of faults.
Second, it adjusts the inquiry to include new market segments not covered thoroughly in previous reports, such as device and infrastructure segments.
And I don't need to fill you in on the China-related content of the album (a work I hasten to admit I haven't heard yet), as that is covered thoroughly in an excellent Huffington Post piece by David Flumenbaum.
The contest for Syria between forces loyal to President Bashar al-Assad and the armed opposition seeking his ouster presents a daily stream of amateur videos of the violence and the activities related to it, making this a conflict like almost no other to try to cover thoroughly and thoughtfully.
It seems to me that the most troublesome aspect of the whole affair is not so much Ms. Miller's journalistic lapses, but The Times's admission that it failed to cover thoroughly and aggressively one of the most important political stories of recent years because editors were concerned about the impact on Ms. Miller.
Purpose / Objective The Review is to cover thoroughly all aspects of the 63 youth centers' operations such as vision, objectives, programs, activities, staffing, equipment, and others.
Stir the meat in the seasoning so it will cover thoroughly.
