Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"zhan rao can snippets" » "zhan gao can snippets", "tan rao can snippets", "zhan mao can snippets", "zhan tao can snippets", "zhan tao canh 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: (((("zhan rao can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("zhan rao can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( zhan rao can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("zhan rao can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.