Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung van tri slippers" » "duong van tri slippers", "dung va tri slippers", "dang van tri slippers", "dung van tai slippers", "dung van thi slippers", "dung van toi slippers", "dung van tri slippery", "dung van tri 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 ("dung van tri slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dung van tri slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dung van tri slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dung van tri slippers"))) or ("locating bug code snippets"))*.