Perhaps you should try some spelling variations:
"locating bugs code slippers" » "locating bugs code snippets", "locating bug code slippers"
"python using java snippets" » "python using data snippets"
"hoc do dan snippets" » "hoc doi dan snippets", "hoc co dan snippets", "hoc bo dan snippets", "hoc do danh snippets", "hoc dao dan snippets", "hoc do dang 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: (((("hoc do dan snippets") OR ("python using java snippets"))) OR ("locating bugs code slippers"))~.
• Removing quotes may allow a broader search: (((( hoc do dan snippets ) or ( python using java snippets ))) or ( locating bugs code slippers ))~.
• Adding a wildcard symbol may retrieve word variants: (((("hoc do dan snippets") or ("python using java snippets"))) or ("locating bugs code slippers"))*.