Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"locating bugs code snippets" » "locating bug code snippets"
"co doi co snippets" » "cho doi co snippets", "co dot co snippets", "co dai co snippets", "co doi bo snippets", "co moi co snippets", "co hoi co snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("co doi co snippets") or ("python missing data snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("co doi co snippets") OR ("python missing data snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( co doi co snippets ) or ( python missing data snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co doi co snippets") or ("python missing data snippets"))) or ("locating bugs code snippets"))*.