Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi hoi long snippets" » "doi hoi luong snippets", "doi hai long snippets", "doi hoi lang snippets", "doi thoi long snippets", "doi voi long snippets", "doi moi long 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: (((("doi hoi long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi hoi long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi hoi long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi hoi long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.