Perhaps you should try some spelling variations:
"state schools surveys." » "state schools serve.", "small schools surveys."
"motor skills series." » "motor skills surveys.", "motor skills survey.", "labor skills series."
"math point surveys." » "math patient surveys.", "math point sources.", "math soil surveys."
"math phone surveys." » "math phone survey."
"math school surveys." » "small school surveys.", "smart school surveys.", "haiti school surveys."
"math school survey." » "small school survey.", "smart school survey.", "haiti school survey."
"map school surveys." » "a school surveys.", "day school surveys.", "can school surveys."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("motor skills series.") or ((((("math point surveys.") or ("math phone surveys."))) or ((((((((("math school surveys.") or ("math school survey."))) or ("high school surveys."))) or ("map school surveys."))) or ("state schools surveys."))))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("motor skills series.") OR ((((("math point surveys.") OR ("math phone surveys."))) OR ((((((((("math school surveys.") OR ("math school survey."))) OR ("high school surveys."))) OR ("map school surveys."))) OR ("state schools surveys.")))))).
• Removing quotes may allow a broader search: (( motor skills series. ) or ((((( math point surveys. ) or ( math phone surveys. ))) or ((((((((( math school surveys. ) or ( math school survey. ))) or ( high school surveys. ))) or ( map school surveys. ))) or ( state schools surveys. )))))).
• Adding a wildcard symbol may retrieve word variants: (("motor skills series.") or ((((("math point surveys.") or ("math phone surveys."))) or ((((((((("math school surveys.") or ("math school survey."))) or ("high school surveys."))) or ("map school surveys."))) or ("state schools surveys."))))))*.