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