It was precisely because most of them were secluded in one place, living self-sufficiently, and such places were not easy to find. Moreover, during the war, there were many matters to deal with every day. Even those nobles who were heavily relied upon had even more to take care of themselves.
Therefore, they did not have much time to go seeking the next day, even if it were their subordinates who were sent to search. Every day they behaved sluggishly, not taking the task seriously. They believed that if they truly found more powerful masters, their own positions might be at risk. Such thoughts were not unfounded and were entirely understandable.
However, if one wanted to solve this problem, there was only one way, and that was for the nobles to search themselves. But the search would take a long time, and even if you were willing to spend this time, you might not find any hidden masters among the common folk at all.
