Perhaps you should try some spelling variations:
methodology problem » methodology proposed (Expand search), methodology project (Expand search), methodology public (Expand search)
sampling python » sampling method (Expand search), sampling position (Expand search), sampling methods (Expand search)
carbon surface » urban surface (Expand search)
using sampling » using subsampling (Expand search), using saline (Expand search), sinus sampling (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
coder carbon » cover carbon (Expand search), comer carbono (Expand search), modern carbon (Expand search)

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

• Removing quotes may allow a broader search: (( coder carbon surface methodology problem ) OR ( using sampling python python programming ))~.