Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong cua soa snippets" » "cong cu soa snippets", "dong cua soa snippets", "huong cua soa snippets", "cong cua so snippets", "cong cua loai snippets", "cong cua song 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 cua soa 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 cua soa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cua soa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cua soa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.