Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc giai den snippets" » "hoc giao den snippets", "hoc dai den snippets", "so giai den snippets", "hoc giay den snippets", "hoc giai doan snippets", "hoc thai den 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: (((("hoc giai den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc giai den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc giai den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc giai den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.