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