Perhaps you should try some spelling variations:
"trong danh tu slippers" » "trong doanh tu slippers", "truong danh tu slippers", "trong anh tu slippers", "trong hanh tu slippers", "trong doanh thu slippers", "trong danh tu slippery", "trong danh tu 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: (((("trong danh tu slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong danh tu slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong danh tu slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong danh tu slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.