Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ca chang hoa snippets" » "ca hang hoa snippets", "ca chang ha snippets", "ca thanh hoa snippets", "ca chung hoa snippets", "co chang hoa snippets", "san chang hoa 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: (((("ca chang hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ca chang hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ca chang hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ca chang hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.