Single terms, phrases, and so on can be combined using OR in upper,
lower, or mixed case.
The OR operator is interpreted as "at least one is required, more than one or all can be returned".
If not otherwise specified, by default search fragments will be ORed together.
big yellow banana big OR yellow OR banana TEXT:big TEXT:yellow TEXT:banana TEXT:big OR TEXT:yellow OR TEXT:banana
These queries search for nodes that contain at least one of the terms big, yellow, or banana in any content.