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