Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong bo den snippets" » "cong bao den snippets", "cong so den snippets", "cong co den snippets", "cong bo de snippets", "cong o den snippets", "cong bo wen 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: (((("cong bo 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: (((("cong bo den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong bo den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong bo den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.