Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan lap hoc snippets" » "phan lap hoc snippets", "dan luan hoc snippets", "dan lop hoc snippets", "dan lap doc snippets", "dan phap hoc 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 lap hoc 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 lap hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan lap hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan lap hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.