Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan doan den snippets" » "tran doan den snippets", "tap doan den snippets", "van doan den snippets", "tan doan dien snippets", "tan dan den snippets", "tan don 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: (((("tan doan 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: (((("tan doan den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan doan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan doan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.