Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan hoc da snippets" » "van hoc da snippets", "dan toc da snippets", "dai hoc da snippets", "dan hoc dan snippets", "dan hoc dai snippets", "dan hoc dat 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 da 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 da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan hoc da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan hoc da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.