Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"quoc o duan snippets" » "quoc co duan snippets", "quoc lo duan snippets", "quoc so duan snippets", "quoc o dan snippets", "quoc o quan snippets", "quoc o luan snippets", "quoc o duan slippers"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("quoc o duan snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quoc o duan snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( quoc o duan snippets ) or ( python using java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc o duan snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))*.