Perhaps you should try some spelling variations:
"synthesizes" » "synthesis", "syntheses", "synthesizing", "synthesiss"
"synthesisdr" » "synthesiser", "synthesisers", "synthesis"
"synthesized" » "synthesisd", "synthesed"
"synthesize" » "synthesis", "synthese"

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: ((("synthesized" OR "synthesizes") OR "synthesisdr") OR "synthesize").
• Removing quotes may allow a broader search: ((( synthesized or synthesizes ) or synthesisdr ) or synthesize ).
• Adding a wildcard symbol may retrieve word variants: ((("synthesized" or "synthesizes") or "synthesisdr") or "synthesize")*.