Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dap tan cao snippets" » "dap tan code snippets", "dac tan cao snippets", "dai tan cao snippets", "tap toan cao snippets", "dap toan cao snippets", "dap tao cao snippets", "dap tay cao 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: (((("dap tan cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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