Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhi den cong snippets" » "nhi dien cong snippets", "nhi den dong snippets", "nhi len cong snippets", "thai den cong snippets", "khi dien cong snippets", "nghi don cong 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: (((("nhi den cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhi den cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhi den cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhi den cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.