I have opened the TDNT and want to look up a Greek lemma on the app on my iPad. I changed my keyboard to Greek and it does type Greek characters in the address or find box in the TDNT but it doesn't go anywhere. If I type in a Strong's number for a Greek lemma, it will successfully go to the entry. I have tried copying and pasting a Greek lemma into TDNT to find it and it doesn't go anywhere. Does anyone else have a successful result using Greek letters in finding an entry in TDNT or is using a Strong's number the only way to locate the article? Thanks!
Additionally, is there a way to find out how best to search on lemmas in lexicons, IOW, something in a knowledge base or "Information" or "Help" that gives instruction on how to do this without trial and error?