Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con cu hoan snippets" » "con cuu hoan snippets", "con su hoan snippets", "con vu hoan snippets", "cong cu hoan snippets", "con cua hoan snippets", "con tu hoan 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: (((("con cu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con cu hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con cu hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con cu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.