Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cho ban tran snippets" » "cho ban trang snippets", "cho tan tran snippets", "cho ban than snippets", "cho band tran snippets", "co ban tran snippets", "cho bac tran 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 ban tran snippets"))) or ("locating bug core snippets"))~.
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