Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"co hoi de snippets" » "co hoc de snippets", "co loi de snippets", "co hoi den snippets", "co khoi de snippets", "co hoi ve snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

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