Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chun yu den snippets" » "chen yu den snippets", "chun su den snippets", "chuang yu den snippets", "chun tu den snippets", "chun yu de 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: (((("chun yu 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: (((("chun yu den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chun yu den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chun yu den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.