Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"when moi den snippets" » "thien moi den snippets", "khien moi den snippets", "he moi den snippets", "when hoi den snippets", "when moi dan snippets", "when moi 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: (((("when moi 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: (((("when moi den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( when moi den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("when moi den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.