Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong chu le snippets" » "cong chuc le snippets", "cong chua le snippets", "cong cu le snippets", "cong chu de snippets", "cong nhu le snippets", "cong chul lee 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 chu le 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 chu le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong chu le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong chu le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.