Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"con dong dat slippers" » "cong dong dat slippers", "con duong dat slippers", "co dong dat slippers", "con dong vat slippers", "con dung dat slippers", "con dong ha slippers", "con dong dat slippery", "con dong dat grippers"
"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: (((("dung java java snippets") or ("con dong dat slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("con dong dat slippers"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("con dong dat slippers"))) or ("locating bug code snippets"))*.