Use filters to limit your results to peer-reviewed articles.
Use filters to limit your results to the last 10 to 15 years.
Systematic reviews, literature review, and meta analysis.
Some articles may be about grades/levels that you are not interested in.
Concept One Concept Two Additional Concepts
"literacy development" phonics intervention, strategy, practice
or or
"early literacy development" "phonemic awareness"
or or
"emergent literacy development" [your topic]