Perhaps you should try some spelling variations:
variational method » variational methods (Expand search)
using variational » using vibrational (Expand search), using fractional (Expand search), using traditional (Expand search)
time processing » the processing (Expand search), image processing (Expand search), pre processing (Expand search)
method python » method method (Expand search), python python (Expand search)
code time » node time (Expand search), codax time (Expand search), code the (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( compra python code time processing ) OR ( using variational method python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( compra python code time processing ) OR ( using variational method python programming ))*.