search with several keywords

Hello, I have the impression that the search with several keywords does not work properly.
When I do a search with several words, if there are no results with exactly the 2 words at the same time, it does not find anything. Even if there are many results with only 1 of the 2 words.
For example, if I search for the word “port”, I have 10 results but if I search for the word “port” and “director”, I have no more answers. Is there a possibility to set the search?
Thank you