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