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