Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thac van cau snippets" » "thac van code snippets", "thai van cau snippets", "thao van cau snippets", "thuc van cau snippets", "thac van dau snippets", "thac van hau snippets", "thac van chat 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: (((("thac van cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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