Assuming ‘ixquick’ this is now ‘startpage.com’, you can do a scoped query (e.g.
host:acrobatfaq.com/atbref8 +designator for designator-related articles. But the search results in only 5 matches, only one of which is actually in the targeted part of the web site and none of which are pertinent to the search term. So I guess startpage’s indexing is a bit flaky. The whole domain is not closed to robots so should be indexed by webcrawlers. But, I’m not a web tech.
I’m happy to add code to the web pages to aid search but I don’t have time to figure it out. If someone has a tested solution, by all means drop me a line. Note: atbref is all my effort, whilst Eastgate is helpful answering niche questions via other channels, the content is generated and hosted entirely by me as a resource I choose to stare with the Tinderbox community. Thus, there’s no dev ‘budget’ for search!