Perhaps you should try some spelling variations:
coder sampling » under sampling (Expand search), over sampling (Expand search), core sampling (Expand search)
r programming » _ programming (Expand search), c programming (Expand search), pair programming (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
coder coder » coder decoder (Expand search), code code (Expand search), decoder codec (Expand search)
sampling r » sampling _ (Expand search), sampling 2 (Expand search), sampling rds (Expand search)

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

• Removing quotes may allow a broader search: (( coder coder sampling r programming ) OR ( api python python python programming ))~.