Perhaps you should try some spelling variations:
satellite estimates » satellite images, satellite altimeter
satellite states » satellite status, satellite systems, satellite studies
satellite state » satellite status, satellite space, satellite date

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: "((satellite state) OR (((satellite estimates) OR (satellite states)))).
• Removing quotes may allow a broader search: ((satellite state) or (((satellite estimates) or (satellite states)))).
• Adding a wildcard symbol may retrieve word variants: "((satellite state) or (((satellite estimates) or (satellite states))))*.