Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc quy long snippets" » "duc huy luong snippets", "duc quan long snippets", "duc cuu long snippets", "duc duy long snippets", "duc huy long snippets", "duy quy 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: (((("duc quy 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: (((("duc quy long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc quy long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc quy long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.