Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"van thi hung snippets" » "van thi huong snippets", "van thi nhung snippets", "van thi chung snippets", "van tai hung snippets", "dan thi hung snippets", "van thu hung snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("van thi hung snippets"))) or ("locating bug core snippets"))~.
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