Perhaps you should try some spelling variations:
"children's first and children's playmate" » "children's first and children's play", "children's first and children's playhouses", "children's art and children's playmate", "children's films and children's playmate", "children's fears and children's playmate"
"children's digest and children's plays" » "children's dignity and children's plays", "children's best and children's plays", "children's digital and children's plays", "children's digest and children's play"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("children's digest and children's plays") or ("children's first and children's playmate"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("children's digest and children's plays") OR ("children's first and children's playmate")).
• Removing quotes may allow a broader search: (( children's digest and children's plays ) or ( children's first and children's playmate )).
• Adding a wildcard symbol may retrieve word variants: (("children's digest and children's plays") or ("children's first and children's playmate"))*.