Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"su choi cong snippets" » "su cho cong snippets", "su chi cong snippets", "su choi trong snippets", "tu choi cong snippets", "san choi cong 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: (((("su choi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("su choi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( su choi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("su choi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.