I am using full-text search. and If I search for keywords like "admin", "nt-unstructured", also it is showing results,
Can anyone please help me out to restrict full-text search for these AEM pre-defined properties?
For restricting the any pre-defined property, navigate to the "/system/console/configMgr" and search for the configuration "Apache Jackrabbit Oak Solr indexing / search configuration". Within the particular configuration there is a field "ignored properties". Add the pre-defined property which you which to exclude.
Below is the attached screenshot for that configuration.