Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong hang di snippets" » "cong thang di snippets", "cong hung di snippets", "cong lang di snippets", "cong hang doi snippets", "cong hang vi snippets", "cong hang dien 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 hang 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 hang di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong hang di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hang di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.