Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"trinh van doi snippets" » "trinh han doi snippets", "trinh quan doi snippets", "trinh toan doi snippets", "trinh van loi snippets", "trinh van noi snippets", "trinh van do snippets"
"dung cac code snippets" » "luong cac code snippets", "dung cho code snippets", "dung tai code snippets", "dung cac cong snippets", "dung cac co snippets", "dung cac che snippets"

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh van doi snippets") or ("dung cac code snippets"))) or ("locating bugs code snippets"))~.
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• Adding a wildcard symbol may retrieve word variants: (((("trinh van doi snippets") or ("dung cac code snippets"))) or ("locating bugs code snippets"))*.