Perhaps you should try some spelling variations:
"trinh hang hieu slippers" » "trinh han hieu slippers", "tranh hang hieu slippers", "trinh hanh hieu slippers", "trinh hang tieu slippers", "trinh tang hieu slippers", "trinh hoang hiep slippers", "trinh hang hieu slippery", "trinh hang hieu 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 ("trinh hang hieu 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 hang hieu slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trinh hang hieu slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trinh hang hieu slippers"))) or ("locating bug code snippets"))*.