Perhaps you should try some spelling variations:
"mang nao robot slippers" » "mang tao robot slippers", "mang cho robot slippers", "mang a robot slippers", "mang may robot slippers", "dang nam robot slippers", "mang xa robot slippers", "mang nao robot slippery", "mang nao robot 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: (((("mang nao robot slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mang nao robot slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mang nao robot slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mang nao robot slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.