Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw snippets", "python using sat slippers"
"van den code snippets" » "van den coi snippets", "van den cong snippets", "van de code snippets", "van der code snippets", "ban den code snippets", "van den code slippers"

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 den code snippets") or ("python using sat snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van den code snippets") OR ("python using sat snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( van den code snippets ) or ( python using sat snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van den code snippets") or ("python using sat snippets"))) or ("locating bugs code snippets"))*.