Hi,
You didn't specify the product you're using (or would like to start using), but sounds like this is the question about App Search. Let me know if this is not correct.
- You can't specify the order of fields on which search is done. But it really does not matter, in terms of what results are returned.
- You can configure which fields are more and less important using field weights and boosts:
Results will be ordered according to the score. App Search includes Query Tester, where you can try your searches and see the results of applying different tuning parameters.