@SimpleSearch This happens sometimes if following are not done properly.
- Ensure Structured Data: Implement Schema.org markup for scholarly articles including title, author names and affiliations, publication date, keywords, and abstract. This provides clear and consistent information for Google Scholar bots to understand.
- Format Author Names Consistently: Use the same format (e.g., first name, last name) across all publications and platforms. Consider using ORCID identifiers for authors.
- Use High-Quality PDFs: Create searchable PDFs with full text and avoid image-based PDFs. Embed metadata within the PDF document properties.
- Optimize HTML Pages: Make sure the HTML pages for each publication are well-structured with clear titles, headings, and body content. Include the full text of the research and relevant keywords naturally throughout the text.
- Link to Related Publications: Use internal links to connect related research on your website. This helps Google Scholar understand the context and subject matter of your publications.
This comes is with experience, working for exam guide about nursing licensing related content on a website.
Hope this helps you out. 
