Perhaps you should try some spelling variations:
"trong dam rao snippets" » "trong lam rao snippets", "trong nam rao snippets", "trong cac rao snippets", "trong dam trao snippets", "trong dam bao snippets", "trong dam cao snippets", "trong dam rao slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("trong dam rao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong dam rao snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("trong dam rao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.