Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lap van du snippets" » "lap va du snippets", "tap van du snippets", "lap ban du snippets", "lap van duy snippets", "lap van dau snippets", "lap 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: (((("lap 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: (((("lap van du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lap van du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lap van du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.