чувство на недостиг|feeling of missing

I'm sorry, but "чувство на недостиг|feeling of missing" does not appear to be a Spanish word or phrase. It seems to be a combination of languages, with "чувство на недостиг" being in Cyrillic script, which is used in languages like Russian or Bulgarian, and "feeling of missing" in English. If you meant a specific Spanish word or phrase, please provide it, and I would be happy to help with the definition. tuntematon