Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"han phi cong snippets" » "han phi code snippets", "han thi cong snippets", "han phan cong snippets", "han pham cong snippets", "phan phoi cong snippets", "han phien cong snippets", "chau phi cong snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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