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