What will be your next steps if your SEO methods or technique does not work?Report
My first attempt would to try analysis the problem and resolve them step by step
Firstly I would try to see whether it is a new project, and then like to re-check the key words.
Also, I would look for relevant key-words that can be helpful.
Even though the webpage and website has been indexed well and still not appearing on the first 10 pages of search engine result page, then I would make some changes in page text, titles and description.
If website is not indexed well or dropped from the index, than it might comprises serious issues and re-work might be required.