Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong suat cu snippets" » "nang suat cu snippets", "cong san cu snippets", "cong cua cu snippets", "cong xuat cua snippets", "cong luat cau snippets", "cong luat cua 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 suat 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: (((("cong suat cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong suat cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong suat cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.