Perhaps you should try some spelling variations:
"locating bug code slippers" » "locating bug code snippets", "locating bung code slippers", "locating bugs code slippers"
"python using java snippets" » "python using data snippets"
"dan van duc snippets" » "dang van duc snippets", "doan van duc snippets", "dao van duc snippets", "dan van duy snippets", "dan van du snippets", "dan tran duc 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: (((("dan van duc snippets") OR ("python using java snippets"))) OR ("locating bug code slippers"))~.
• Removing quotes may allow a broader search: (((( dan van duc snippets ) or ( python using java snippets ))) or ( locating bug code slippers ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dan van duc snippets") or ("python using java snippets"))) or ("locating bug code slippers"))*.