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