Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nho van den snippets" » "ngo van den snippets", "ho van den snippets", "nha van den snippets", "nho van de snippets", "nho van der snippets", "nho ban 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: (((("nho van 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: (((("nho van den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nho van den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nho van den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.