Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"wim van du snippets" » "diem van du snippets", "kiem van du snippets", "wim van duy snippets", "wim van dau snippets", "wim van de 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: (((("wim van du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("wim van du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( wim van du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("wim van du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.