Search features

hi,
this is about search only catalogue items:
i ave read about relenvassi or custom post search but…

i need to limit search to a specific custom post type in a single page. (the catalogue)
the thing id like to obtain is for example…If i search Apple (a catalogue item) in the page where catalogue is i need to find it, as required. But when i search for keyword “Pear” that is a catalogue item and also a no-catalogue item in a page different from where the catalogue is, i dont want to find the catalogue items results.
pls let me know hoo i can obtain this.

https://www.ads-software.com/plugins/wp-catalogue/