Perhaps you should try some spelling variations:
"dong trinh mach slippers" » "cong trinh mach slippers", "dong tinh mach slippers", "dong tranh mach slippers", "dong trinh lich slippers", "dong trinh minh slippers", "dong trinh mach slippery", "dong trinh mach 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 trinh mach 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 trinh mach slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong trinh mach slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong trinh mach slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.