Perhaps you should try some spelling variations:
"synthesizer" » "synthesized", "synthesizes", "synthesizing", "synthesizedr", "synthesisr", "syntheser"
"synthesizedr" » "synthesized", "synthesizes", "synthesizers", "synthesizeddr", "synthesisdr", "synthesedr"
"synthesisdr" » "synthesiser", "synthesisers", "synthesis"
"synthesize" » "synthesized", "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: (("synthesizer" OR (("synthesizedr" OR "synthesisdr") OR "synthesisdr")) OR "synthesize").
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"synthesizer\" or ((\"synthesizedr\" OR \"synthesisdr\") or \"synthesisdr\")) or \"synthesize\")".
• Removing quotes may allow a broader search: (( synthesizer or (( synthesizedr OR synthesisdr ) or synthesisdr )) or synthesize ).
• Adding a wildcard symbol may retrieve word variants: (("synthesizer" or (("synthesizedr" OR "synthesisdr") or "synthesisdr")) or "synthesize")*.