Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam cao cong snippets" » "lam cac cong snippets", "lam cao dang snippets", "lam cua cong snippets", "nam cao cong snippets", "lam co cong snippets", "dam cao cong 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: (((("lam cao cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lam cao cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam cao cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam cao cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.