Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trinh lan tang slippers" » "trinh luan tang slippers", "trinh han tang slippers", "trinh van tang slippers", "trinh fan tang slippers", "trinh lan lang slippers", "trinh lan tang slippery", "trinh lan tang 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 lan tang 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 lan tang slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trinh lan tang slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trinh lan tang slippers"))) or ("locating bug code snippets"))*.