Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan hoc phe snippets" » "van hoc phe snippets", "dan toc phe snippets", "dai hoc phe snippets", "dan hoc pho snippets", "dan hoc he snippets", "dan hoc phi 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: (((("dan hoc phe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan hoc phe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan hoc phe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan hoc phe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.