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