Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat nghe so snippets" » "day nghe so snippets", "da nghe so snippets", "dang nghe so snippets", "dat nghe son snippets", "dat nghe co snippets", "dat nghiep so 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: (((("dat nghe so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat nghe so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat nghe so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat nghe so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.