Perhaps you should try some spelling variations:
"coder coder low dropout problem" » "coder coder low drop problem" (Expand search), "coder coder low drought problem" (Expand search), "coder decoder low dropout problem" (Expand search), "code code low dropout problem" (Expand search), "decoder codec low dropout problem" (Expand search), "coder coder of dropout problem" (Expand search), "coder code low dropout problem" (Expand search), "coder codes low dropout problem" (Expand search), "coder under low dropout problem" (Expand search)
"api pitons python python programming" » "api pitons pythons python programming" (Expand search), "api pitons piton python programming" (Expand search), "api pitons pytm python programming" (Expand search), "api citons python python programming" (Expand search), "api pitoni python python programming" (Expand search), "api pitoes python python programming" (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: "((\"coder coder low dropout problem\") OR (\"api pitons python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder low dropout problem ) OR ( api pitons python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder low dropout problem") OR ("api pitons python python programming"))*.