Creating a wordpress database based small search engine for keywords

VetPet is a simple database that we would like to implement on the basis of Wordpress. Using two simple filters: animal species and symptom, the user can search out the relevant contributions from the database (i.e. from the WP contributions). So there are the following requirements: • The visitor must be logged in to get full access to the database / contributions. • He must also have an active membership. We plan to manage the membership via the extension "AR Membership". • A drug (its dosage, dangers, etc.) is described by a WP contribution. • The possibility must be created in the backend: o Assign each contribution to one or more animal species o Assign each contribution to one or more symptoms • A search page / search results page must be built in the customer front end: o The two filters are selection lists. The selection of the animal species reduces the range of values ​​for the Symptoms filter. So if an animal species has been selected, this filter only contains symptoms for the selected animal species. o This logic should also work in the other direction: i.e. selection of a symptom reduces the range of values ​​of the animal species filter. o As you enter each additional letter, the selection list is reduced to the values ​​that are still suitable. o If both filters are set, the result list appears - We do the hosting ourselves - There are no payment providers to be connected - We will probably use the Salient theme [login to view URL] - We do pure configuration work and content filling ourselves - We do the coupling of the WP user / rights management (via AR Membership) with our rights management server ourselves