Perhaps you should try some spelling variations:
astronomy survives » astronomy survey, astronomy surveys, astronomy studies
optical astronomy » nautical astronomy, positional astronomy
astronomy sergey » astronomy survey, astronomy surveys, astronomy seven
astronomy series » gastronomy services, astronomy studies, astronomy surveys
double spherical » double helical, degree spherical
core spherical » case spherical, pole spherical, some spherical
patrick double » patrick doyle, patrick dubli, patrick dublin
patrick moire » patrick moore, patrick mkie, patrick meir
moire optical » more optical, core optical, fibre optical
patrick core » patrick corr, patrick moore, patrick corsi

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 moire optical astronomy sergey ) OR ((( the patrick core spherical astronomy series ) OR ( the patrick double spherical astronomy survives )))).
• Adding a wildcard symbol may retrieve word variants: (( the patrick moire optical astronomy sergey ) or ((( the patrick core spherical astronomy series ) or ( the patrick double spherical astronomy survives ))))*.