Perhaps you should try some spelling variations:
canine pathogen » maize pathogen (Expand search), feline pathogen (Expand search), ancient pathogen (Expand search)
pathogen vector » pathogen vectors (Expand search)
vector computer » vector computers (Expand search), reactors computer (Expand search), vector competent (Expand search)
coupled pitons » coupled potts (Expand search), coupled position (Expand search)
using coupled » in coupled (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( canine pathogen vector computer program ) OR ( using coupled pitons python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( canine pathogen vector computer program ) OR ( using coupled pitons python programming ))*.