You may have already noticed this, but in a Linkedin search, the results are often of variable quality. The reason? The search algorithm is not very efficient.
You may not know it, but LinkedIn limits your search to 1,000 results (2,500 for a Sales Navigator search). It is therefore not possible to access the results beyond this search. Fortunately, there are tricks to overcome this. This article explains in detail how to work around the LinkedIn limit.