Perhaps you should try some spelling variations:
syntheser » synthese, syntheses, synthesizer
synthesen » synthese, syntheses, synthesis
synthesize » synthesized, synthesis, synthese
synthesisd » synthesised, 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: (( (syntheser OR synthesen) OR synthesize ) OR synthesisd ).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( (syntheser OR synthesen) or synthesize ) or synthesisd )".
• Adding a wildcard symbol may retrieve word variants: (( (syntheser OR synthesen) or synthesize ) or synthesisd )*.