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