Perhaps you should try some spelling variations:
"hung trinh va slippers" » "hung thinh va slippers", "hung tinh va slippers", "chuong trinh va slippers", "hung trinh van slippers", "hung trinh vat slippers", "hung trinh ve slippers", "hung trinh va slippery", "hung trinh va grippers"
"dung java java snippets" » "dung va java snippets"
"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 java java snippets") or ("hung trinh va slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("hung trinh va slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( hung trinh va slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("hung trinh va slippers"))) or ("locating bug code snippets"))*.