Perhaps related to the recent re-engineering of the search engine. Specifically when searching my bookshelf | recipes for 'hazlenut' I get 2 results. 'chocolate hazlenut' returns zero results. 'chocolate cake' returns 676 (probably correct). If I then filter on Ingredients | Baking Ingredients | Nuts | Hazlenuts, I then get 39 results (also probably correct). 12 of the 39 recipes have "hazlenut" in the title and were not seen by the unfiltered search at all. And all have 'hazlenut' listed as an ingredient, which were also missed. At least I'm relieved that it isn't my imagination.