Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghe vot con snippets" » "nghe vat con snippets", "nghe viet con snippets", "nghe va con snippets", "nghe mot con snippets", "nghe vit con 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: (((("nghe vot 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: (((("nghe vot con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghe vot con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghe vot con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.