Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong luan trac slippers" » "dung luan trac slippers", "tong luan trac slippers", "dong xuan trac slippers", "dong luan tac slippers", "dong luan tranh slippers", "dong luan thuc slippers", "dong luan trac slippery", "dong luan trac 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 luan trac 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 luan trac slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dong luan trac slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dong luan trac slippers"))) or ("locating bug code snippets"))*.