Perhaps you should try some spelling variations:
protection methods » projection methods (Expand search), production methods (Expand search), detection methods (Expand search)
based protection » based production (Expand search), basic protection (Expand search), shared protection (Expand search)
colour function » colour functions (Expand search), contour function (Expand search), motor function (Expand search)
function based » reaction based (Expand search), reflection based (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
using codigo » using indigo (Expand search), using coding (Expand search), using codium (Expand search)

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

• Removing quotes may allow a broader search: (( colour function based protection methods ) OR ( using codigo python python programming ))~.