Perhaps you should try some spelling variations:
"tran tro trinh slippers" » "tran tra trinh slippers", "tran tao trinh slippers", "tran tho trinh slippers", "tran troi trinh slippers", "tran tri trinh slippers", "tran trong trinh slippers", "tran tro trinh slippery", "tran tro trinh grippers"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "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: (((("tran tro trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( tran tro trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("tran tro trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.