Perhaps you should try some spelling variations:
coupling protein » uncoupling protein (Expand search), uncoupling proteins (Expand search), coupled protein (Expand search)
foliar pathogen » foliar pathogens (Expand search), foliar nitrogen (Expand search), feline pathogen (Expand search)
pathogen vector » pathogen vectors (Expand search)
vector computer » vector computers (Expand search), reactors computer (Expand search), vector competent (Expand search)
using coupling » running coupling (Expand search), using competing (Expand search), using coupled (Expand search)

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

• Removing quotes may allow a broader search: (( foliar pathogen vector computer program ) OR ( using coupling protein python programming ))~.