Talvez debería tentar con algunhas variantes ortográficas:
supporting precision » supporting imprecision, supporting decision, supporting decisions
information sources » information resources, information services, information sciences
sources supporting » source supporting, resources supporting, resource supporting
data testing » data creating, data fitting, a testing
data matrix » data matrices
data peter » data paper

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: information sources supporting precision ((data testing) or (((data peter) or (data matrix))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information sources supporting precision ((data testing) OR (((data peter) OR (data matrix)))).
• Adding a wildcard symbol may retrieve word variants: information sources supporting precision ((data testing) or (((data peter) or (data matrix))))*.