Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong lang duc slippers" » "dong bang duc slippers", "cong lang duc slippers", "dong lanh duc slippers", "dong dang duc slippers", "dong lang du slippers", "dong lang suc slippers", "dong lang duc slippery", "dong lang duc grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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 ("dong lang duc slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dong lang duc slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dong lang duc slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dong lang duc slippers"))) or ("locating bug code snippets"))*.