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