Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trinh len dam slippers" » "trinh den dam slippers", "trinh le dam slippers", "trinh ven dam slippers", "trinh men dam slippers", "trinh tien dam slippers", "trinh len dam slippery", "trinh len dam 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 java java snippets") or ("trinh len dam slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trinh len dam slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trinh len dam slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trinh len dam slippers"))) or ("locating bug code snippets"))*.