How can you receive the correct answer about a particular bible verse if the person asking doesn't know or state the verse?

I don't know about a "correct" answer, but there's a reasonable chance of obtaining informed answers if you can provide enough description so that others can search for it. The Internet can come up with matches for key phrases pretty quickly, and if they include a Bible reference by book, chapter, and verse, it's easy to search for the book and chapter (and a preferred version) and read the context.

To those who have chosen their choice is the "correct one" just as in the gods.

I'm not here to receive the best answer. I answer if I can, and if I think it will help someone,  not always for the person asking. A lot of people here are making the site as worthless as possible, the tactic you describe is likely one of those. Sometimes I come here just  to find out that no one serious wants an answer. Spend enough time here over a long period of time, you will get points. 

People who do know the verse can usually answer the question from what the person asking has said. If not, then they probably will not get an answer they can use and understand.

Look the verse up yourself using key words, then present the verse to the person for explanation.

Sites like biblehub.com or biblegateway.com, etc...make this easy to do. 

If no version of the Bible contains those words or anything similar, that ends the issue. Most likely, however, whatever the ideas being presented are addressed SOMEWHERE in scripture. I have yet to encounter any subject that scripture doesn't address, even if people claim otherwise.