Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat nghe con snippets" » "day nghe con snippets", "da nghe con snippets", "dang nghe con snippets", "dat nghe cong snippets", "dat nghe co snippets", "dat nghe son 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 con 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 con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat nghe con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat nghe con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.