Perhaps you should try some spelling variations:
"truan hoi nhap slippers" » "truan doi nhap slippers", "truong hoi nhap slippers", "tan hoi nhap slippers", "truan hoi dap slippers", "truan moi nhat slippers", "truan hoi nhap slippery", "truan hoi nhap 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: (((("truan hoi nhap slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("truan hoi nhap slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( truan hoi nhap slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truan hoi nhap slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.