Talvez debería tentar con algunhas variantes ortográficas:
population documentation » education documentation, population implementation, evaluation documentation
methods decision » methods design, ethics decision, methods session
decision teacher » education teacher, decision tables, decision table
teacher aide » teacher aides, teachers guide, teacher a
formulation » formation

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: ((population documentation) OR (formulation implementation)) methods decision teacher aide~.
• Adding a wildcard symbol may retrieve word variants: ((population documentation) or (formulation implementation)) methods decision teacher aide*.