Perhaps you should try some spelling variations:
"nang tao robot slippers" » "nang cho robot slippers", "nang cao robot slippers", "sang tao robot slippers", "nang tai robot slippers", "nang tao robot slippery", "nang tao 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: (((("nang tao 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: (((("nang tao robot slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang tao robot slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang tao robot slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.