Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chat hoc den snippets" » "chat hoa den snippets", "chat thom den snippets", "cho hoc den snippets", "chat hoc dan snippets", "chat hoc de snippets", "chat hoc hien 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: (((("chat hoc 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: (((("chat hoc den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chat hoc den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chat hoc den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.