Perhaps you should try some spelling variations:
pheromone components » pheromone component (Expand search), ceraone components (Expand search), performance components (Expand search)
components central » componente central (Expand search), components neutral (Expand search), componentes centrais (Expand search)
central program » dental program (Expand search), centro program (Expand search), cultural program (Expand search)
coupling method » counting method (Expand search), sampling method (Expand search), coupled method (Expand search)
using coupling » running coupling (Expand search), using competing (Expand search), using coupled (Expand search)
method python » method method (Expand search), python python (Expand search)
coder » poder (Expand search), codes (Expand search), coded (Expand search)

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

• Removing quotes may allow a broader search: (( coder pheromone components central program ) OR ( using coupling method python programming ))~.