Perhaps you should try some spelling variations:
astronomy surveys » astronomy survey, astronomy surveying, astronomy survives
does practical » notes practical, does practice, globes practical
lens practical » less practical, owens practical, plans practical

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 ((lens practical) OR (does practical)) astronomy surveys.
• Adding a wildcard symbol may retrieve word variants: the patrick ((lens practical) or (does practical)) astronomy surveys*.