Add quotation marks around phrases eg "extended basic"
In the results, note the extract for each link before clicking to see if it is relevant.
Google note: Google is now virtually unuseable with lots of page space totally irrelevant and "hidden" sponsored results. If one of the links to Google gives you poor results, copy the search to one of : DuckDuckGo will improve on Google, OneSearch will improve on Bing. Metager is sometimes very good, sometimes fails.
TI Resources Page | TI programs for emulators | Stainless Software archive
Getting Started with the TI-99/4a book