Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phi sang ban snippets" » "phi san ban snippets", "phap sang ban snippets", "khai sang ban snippets", "phi hang ban snippets", "phi nang ban snippets", "phi sang bae 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 ("phi sang ban snippets"))) or ("locating bug core snippets"))~.
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