It's interesting, because I considered doing this to make it "fair". But after some reflection I noticed that I almost never type complete sentences into google. Google has kind of trained us to use it a certain way, which can be beneficial (less typing, sometimes more generic/better results), but clearly here, it causes a problem because you don't give it enough context behind why you're asking.
> Here's the reassuring truth: Headache, by itself, is rarely caused by a tumor. According to a neurosurgeon at Johns Hopkins' Comprehensive Brain Tumor Center, the chance that your headache is a sign of a brain tumor is very remote.