The search engine doesn't do any type of re-ordering or synonym stuff, it only tires to construct different N-grams from the search query.
So if you for example compare "SDL tutorial" with "SDL tutorials". On google you'd get the same stuff, this search engine, for better or worse doesn't.
This is a design decision, for now anyway, mostly because I'm incredibly annoyed when algorithms are second-guessing me. On the other hand, it does mean you sometimes have to try different searches to get relevant results.
So if you for example compare "SDL tutorial" with "SDL tutorials". On google you'd get the same stuff, this search engine, for better or worse doesn't.
This is a design decision, for now anyway, mostly because I'm incredibly annoyed when algorithms are second-guessing me. On the other hand, it does mean you sometimes have to try different searches to get relevant results.