Perhaps you should try some spelling variations:
"hoang dung cuare snippets" » "hoang tung cuare snippets", "hoang vuong cuare snippets", "thong dung cuare snippets", "hoang dung cua snippets"
"hoang dung co snippets" » "hoang tung co snippets", "hoang vuong co snippets", "thong dung co snippets", "hoang dung cho snippets", "hoang dung cong snippets", "hoang dung cua snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("hoang dung cuare snippets") or ("hoang dung co snippets"))) or ("locating bug code snippets"))~.
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• Removing quotes may allow a broader search: (((( hoang dung cuare snippets ) or ( hoang dung co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoang dung cuare snippets") or ("hoang dung co snippets"))) or ("locating bug code snippets"))*.