Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van den hoa snippets" » "van de hoa snippets", "van der hoa snippets", "ban den hoa snippets", "van dien hoa snippets", "van den ha snippets", "van den ho 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 hoa 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 hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van den hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van den hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.