Perhaps you should try some spelling variations:
"time propagation python python programming" » "time propagation method python programming" (Expand search), "time propagation path python programming" (Expand search), "time programmation python python programming" (Expand search), "the propagation python python programming" (Expand search), "fire propagation python python programming" (Expand search), "noise propagation python python programming" (Expand search), "time propagation pythons python programming" (Expand search), "time propagation piton python programming" (Expand search), "time propagation pitons python programming" (Expand search)
"coder and vector coding program" » "coder and vector cloning program" (Expand search), "coder and vector loading program" (Expand search), "coder and vector cooling programs" (Expand search), "code and vector coding program" (Expand search), "codes and vector coding program" (Expand search), "poder and vector coding program" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder and vector coding program") OR ("time propagation python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder and vector coding program\") OR (\"time propagation python python programming\"))".
• Removing quotes may allow a broader search: (( coder and vector coding program ) OR ( time propagation python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder and vector coding program") OR ("time propagation python python programming"))*.