Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dem hoi den snippets" » "dem toi den snippets", "dep hoi den snippets", "dam choi den snippets", "dem hoi dien snippets", "dem hoi dan snippets", "dem moi den 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: (((("dem hoi den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dem hoi den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dem hoi den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dem hoi den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.