Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tan toan he snippets" » "tan toan code snippets", "tan tran he snippets", "tap toan he snippets", "van toan he snippets", "tan toan ho snippets", "tan toan ke snippets", "tan toan ve 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: (((("tan toan he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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