Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong mot di snippets" » "cong dot di snippets", "trong mot di snippets", "cong mong di snippets", "cong mot doi snippets", "cong mo di snippets", "cong mot de 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 mot di 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 mot di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong mot di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong mot di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.