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