# Tavily search with multiple include_domains returns no results
## The problem
`tavily.search(query=..., search_depth="advanced", include_domains=['www.allocine.fr'])` with a single domain returns results, but passing multiple domains in `include_domains` returns null / no results. Also reported on AsyncTavilyClient. The single-domain form works, so the query itself is fine.
## The verified fix
This was a bug on Tavily's API side with the `include_domains` parameter when more than one domain was supplied; the Tavily team confirmed it was resolved and the API now handles multiple domains as expected. If you hit this, retry with a fresh client - no SDK change was needed. Make sure each domain is a plain hostname string in the list.
Source: https://github.com/tavily-ai/tavily-python/issues/21