Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung van giang slippers" » "dung manh giang slippers", "dung tran giang slippers", "dung dan gian slippers", "duong van giang slippers", "dung va giang slippers", "dang van giang slippers", "dung van giang slippery", "dung van giang 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 giang 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 giang slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dung van giang slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dung van giang slippers"))) or ("locating bug code snippets"))*.