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