Perhaps you should try some spelling variations:
extraction conditions » reaction conditions
programming decisions » programming decision, programming design, programming session
programming recursion » programming decision, programming session, programming security
basics tools » basic tools, tactics tools, based tools

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: extraction conditions ((programming decisions) OR (programming recursion)) basics tools~.
• Adding a wildcard symbol may retrieve word variants: extraction conditions ((programming decisions) or (programming recursion)) basics tools*.