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