Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, optical astronomy, positional astronomy
astronomy series » astronomy sergey, gastronomy services, astronomy survives
mpondo practical » upon practical, bonds practical, bono practical
colts practical » its practical, politics practical, results practical
mons practical » coins practical, lens practical, loss practical
patrick mpondo » patricia opondo, patrick bond
patrick colts » patrick colm, patrick bolton, patrick count
patrick mons » patrick moyes, patrick bond, patrick timony

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 mons practical astronomy series ) OR ( the patrick mpondo practical astronomy series ))) OR ( the patrick colts practical astronomy series )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( the patrick mons practical astronomy series ) OR ( the patrick mpondo practical astronomy series ))) or ( the patrick colts practical astronomy series ))".
• Adding a wildcard symbol may retrieve word variants: (((( the patrick mons practical astronomy series ) OR ( the patrick mpondo practical astronomy series ))) or ( the patrick colts practical astronomy series ))*.