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