Perhaps you should try some spelling variations:
"open syllabus test" » "core syllabus test", "new syllabus test", "week syllabus test", "open syllabus heat", "open syllabus list", "open syllabus next"
"open syllable est" » "one syllable est", "open scalable est", "one syllables est", "open syllable both", "open syllable verb", "open syllable _"
"open syllabe est" » "open scalable est", "one syllable est"

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: (("open syllabus test") OR ((("open syllabe est") OR ("open syllable est")))).
• Removing quotes may allow a broader search: (( open syllabus test ) or ((( open syllabe est ) or ( open syllable est )))).
• Adding a wildcard symbol may retrieve word variants: (("open syllabus test") or ((("open syllabe est") or ("open syllable est"))))*.