Perhaps you should try some spelling variations:
"python using data slippers" » "python using java slippers", "python using sat slippers", "python missing data slippers", "python using data slippery", "python using data grippers"
"van dao code snippets" » "van dao core snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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: (((("van dao code snippets") or ("python using data slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van dao code snippets") OR ("python using data slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van dao code snippets ) or ( python using data slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van dao code snippets") or ("python using data slippers"))) or ("locating bug code snippets"))*.