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