Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong tin data slippers" » "thong tin data slippers", "luong tin data slippers", "dong kinh data slippers", "dong big data slippers", "dong tin bat slippers", "dong aid data slippers", "dong tin data slippery", "dong tin data 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 tin data 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 tin data slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tin data slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tin data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.