Typing cooking and baking searches for websites that match both terms 'cooking' and 'baking'. This includes websites with both terms, but not necessarily side by side. Google also ignores the word 'and' in this case. Typing "cooking and baking" searches for website that match the entire phrase "cooking and baking". These websites literally contain the three words 'cooking', 'and', and 'baking', side-by-side, in that order.
Please let me know if you need any clarification. I'm always happy to answer your questions.