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