Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat ca son snippets" » "nhat cua son snippets", "nhap ca son snippets", "hat ca son snippets", "nhat cao son snippets", "nhat ha son snippets", "nhat ca san 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: (((("nhat ca son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhat ca son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat ca son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat ca son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.