Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoa ben con snippets" » "hoa bien con snippets", "hoa benh con snippets", "khoa benh con snippets", "hoa len con snippets", "hoa bien cong snippets", "hoa ban cong 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: (((("hoa ben 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: (((("hoa ben con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoa ben con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoa ben con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.