Perhaps you should try some spelling variations:
"trinh van code snippets" » "trinh han code snippets", "trinh quan code snippets", "trinh toan code snippets", "trinh van de snippets", "trinh van hoe snippets", "trinh van cong snippets"
"dung hung dat slippers" » "dung chung dat slippers", "dung nhung dat slippers", "dung huong dat slippers", "dung dung dat slippers", "dung vung dat slippers", "dung hung dao slippers", "dung hung dat slippery", "dung hung dat grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh van code snippets") or ("dung hung dat slippers"))) or ("locating bug code snippets"))~.
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