Perhaps you should try some spelling variations:
"tranh luat data slippers" » "trinh luat data slippers", "tranh luan data slippers", "trinh luan data slippers", "tranh luat dat slippers", "tranh luat dan slippers", "tranh luat dau slippers", "tranh luat data slippery", "tranh luat data 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 ("tranh luat data slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("tranh luat data slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( tranh luat data slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("tranh luat data slippers"))) or ("locating bug code snippets"))*.