Perhaps you should try some spelling variations:
"dung vinh lieu snippets" » "dang vinh lieu snippets", "dung ninh lieu snippets", "quang vinh lieu snippets", "dung binh lieu snippets", "dung vinh dieu snippets", "dung minh kieu 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: (((("dung vinh lieu snippets") or ("dung java java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vinh lieu snippets") OR ("dung java java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung vinh lieu snippets ) or ( dung java java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung vinh lieu snippets") or ("dung java java slippers"))) or ("locating bug code snippets"))*.