Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"bang cac thin slippers" » "nang cao thin slippers", "hang ca thin slippers", "dung cac thin slippers", "bang cac thi slippers", "bang cach thien slippers", "bang cac chien slippers", "bang cac thin slippery", "bang cac thin grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung java java snippets") or ("bang cac thin slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("bang cac thin slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( bang cac thin slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("bang cac thin slippers"))) or ("locating bug code snippets"))*.