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