Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len va cao snippets" » "lenh va cao snippets", "lon va cao snippets", "nen va cao snippets", "len va cac snippets", "len va co snippets", "len va dao 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: (((("len va cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("len va cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len va cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len va cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.