en_tn/isa/05/04.md

What more could have been done for my vineyard, that I have not done for it?

The owner uses this question to make a statement about his vineyard. This rhetorical questions can be translated as a stataement. AT: "I have done all that I could do for my vineyard!" (See: rc://en/ta/man/translate/figs-rquestion)

When I looked for it to produce grapes, why did it produce wild grapes?

The owner uses a question to say that his vineyard should have produced good grapes. This rhetorical question can be translated as a statement. AT: "I wanted it to make good grapes, but it only produced worthless grapes" (See: rc://en/ta/man/translate/figs-rquestion)