Perhaps you should try some spelling variations:
"tranh luan phan slippers" » "trinh luan phan slippers", "trinh luat phan slippers", "doanh luan phan slippers", "tranh luan van slippers", "tranh luan hoan slippers", "tranh luan phan slippery", "tranh luan phan 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 luan phan 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 luan phan slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( tranh luan phan slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("tranh luan phan slippers"))) or ("locating bug code snippets"))*.