Perhaps you should try some spelling variations:
practical astronomy » nautical astronomy, optical astronomy, positional astronomy
astronomy surveys » astronomy survey, astronomy surveying, astronomy survives
abcs practical » aris practical, apis practical, ics practical
does practical » notes practical, does practice, globes practical
patrick abcs » patrick bas, patrick arens, patrick darcy
patrick does » patrick dobel, patrick del, patrick drew
de practical » de practicas, e practical, de practica
patrick de » patrick d, patrick dr, patrick dale

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