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