Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ngu ba dan snippets" » "ngu ca dan snippets", "ngu va dan snippets", "ngu ta dan snippets", "ngu ban dan snippets", "ngu bac dan snippets", "ngu bay dan snippets", "ngu ba dan slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngu ba dan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( ngu ba dan snippets ) or ( python using java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("ngu ba dan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.