Perhaps you should try some spelling variations:
purchase programme » purchase program (Expand search), purchase programs (Expand search)
decrease purchase » lease purchase (Expand search), declared purchase (Expand search), decrease sucrose (Expand search)
costing methods » costing method (Expand search)
python costing » python coding (Expand search)
methods python » methods action (Expand search), pythons python (Expand search), methods method (Expand search)
decrease toc » decrease of (Expand search), decrease the (Expand search), decrease on (Expand search)
toc decrease » to decrease (Expand search), the decrease (Expand search), not decrease (Expand search)

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

• Removing quotes may allow a broader search: (( decrease toc decrease purchase programme ) OR ( python costing methods python programming ))~.