Perhaps you should try some spelling variations:
"trinh quan lich snippets" » "tinh quang lich snippets", "trinh luat lich snippets", "trinh han lich snippets", "trinh quang linh snippets", "trinh quan li snippets", "trinh quan binh snippets", "trinh quan lich slippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug code slippers", "dung bug core snippets"
"locating bug code snippets" » "locating bug code slippers", "locating bug core snippets"

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh quan lich snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh quan lich snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("trinh quan lich snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.