Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"can cau cong snippets" » "can cau code snippets", "can cac cong snippets", "can cuu cong snippets", "can cao cong snippets", "van cau cong snippets", "ban cau cong snippets", "ca cau cong 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: (((("can cau cong snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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