Perhaps you should try some spelling variations:
functions definitions » function definitions, functional definition, definitions definitions
developing microscopy » developing microsoft, sectioning microscopy, developing microcomputer
definitions problems » definition problems, definitional problems, definitions process
problems developing » problem developing, process developing, programs developing
https » http

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• Performing a fuzzy search may retrieve terms with similar spellings: functions definitions problems developing microscopy https~.
• Adding a wildcard symbol may retrieve word variants: functions definitions problems developing microscopy https*.