Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van den cuoc snippets" » "van den buoc snippets", "van dao cuoc snippets", "van dien cuc snippets", "van de cuoc snippets", "van der cuoc snippets", "ban den cuoc 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: (((("van den cuoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van den cuoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van den cuoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van den cuoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.