I was searching for karkalla recently (an Australian native ingredient), but it is an alternative for "beach bananas", so the search also gave recipes with bananas and recipes for banana leaves. (Jane knows all about this, it did my head in trying to find the dozen'ish recipes using karkalla. (At the time I wondered why the system searches for individual words in a multi-word ingredient, but I am sure there are reasons.)
Also finding Khichdi recipes is the search that provides the most frustration. Alternative spellings include kitchari khichri khichadi kitchuri kicharee, and more.....
Dal (daal, dhal, dahl) doesn't seem to be a problem, as I guess that is also an ingredient.