Perhaps you should try some spelling variations:
"synthesize" » "synthesized", "synthesis"
"synthesizes" » "synthesizeds", "synthesiss", "synthesized", "synthesis", "syntheses"
"synthese" » "synthesis"
"synthesiss" » "synthesises", "synthesis", "synthesise"

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: (("synthesize" OR "synthese") OR ("synthesizes" OR "synthesiss")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"synthesize\" OR \"synthese\") or (\"synthesizes\" or \"synthesiss\"))".
• Removing quotes may allow a broader search: (( synthesize OR synthese ) or ( synthesizes or synthesiss )).
• Adding a wildcard symbol may retrieve word variants: (("synthesize" OR "synthese") or ("synthesizes" or "synthesiss"))*.