Perhaps you should try some spelling variations:
astronomy surveying » astronomy during
astronomy survives » astronomy survey, astronomy surveys, astronomy studies
astronomy services » gastronomy services, autonomy services, gastronomic services
optical astronomy » nautical astronomy, positional astronomy
optics astronomy » opticks astronomy, genetics astronomy, physics astronomy
astronomy series » astronomy sergey, gastronomy services, astronomy studies
corr spherical » cfrp spherical, coma spherical, rrr spherical
moore optics » fibre optics
patrick mein » patrick mkie, patrick madan, patrick m
mein optical » main optical, moon optical, gain optical
patrick core » patrick corsi, patrick coyle, patrick case
core optical » large optical, wave optical
patrick colm » patrick coyle, patrick count, patrick cozzi
colm optical » color optical, film optical, nom optical
patrick corr » patrick carr, patrick corsi, patrick count

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: (((( the patrick moore optics astronomy services ) OR ( the patrick mein optical astronomy survives ))) OR ((((( the patrick core optical astronomy surveying ) OR ( the patrick colm optical astronomy series ))) OR ( the patrick corr spherical astronomy series )))).
• Adding a wildcard symbol may retrieve word variants: (((( the patrick moore optics astronomy services ) or ( the patrick mein optical astronomy survives ))) or ((((( the patrick core optical astronomy surveying ) or ( the patrick colm optical astronomy series ))) or ( the patrick corr spherical astronomy series ))))*.