Blog referencing

Hope you are all doing well! I have a question regarding blog articles and their referencing when it comes to search engine listing, especially with Google. Some of my articles are showing up pretty good while other won’t shop up at all within the results! I’m wondering why there is such a difference between the indexing. Did anyone noticed this?
Is there anything I should try to improve the ranking in search engine results?
Thanks in advance for your inputs/comments !