Talvez debería tentar con algunhas variantes ortográficas:
information requirements » nutrition requirements, irrigation requirements, information environments
requirements a » requirements _
a imprecision » _ imprecision, a precision, data imprecision
data cleaning » data learning
data testing » data fitting, a testing, data writing

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

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