Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong co hoa snippets" » "dong co hoa snippets", "cong cu hoa snippets", "cong so hoa snippets", "cong co hoat snippets", "cong cho hoa snippets", "cong co hoc 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: (((("cong co 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: (((("cong co hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong co hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong co hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.