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