Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"using oc van slippers" » "using c van slippers", "using lc van slippers", "using low van slippers", "using hoc van slippers", "using luoc van slippers", "using quoc van slippers", "using oc van slippery", "using oc van 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung java java snippets") or ("using oc van slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("using oc van slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( using oc van slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("using oc van slippers"))) or ("locating bug code snippets"))*.