Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cho lan tang snippets" » "cho luan tang snippets", "cho fan tang snippets", "cho lan lang snippets", "cho lang tang snippets", "cao lan tang snippets", "cho lon tang 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 ("cho lan tang snippets"))) or ("locating bug core snippets"))~.
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