Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"luc tham cau snippets" » "luc tham code snippets", "luc tam cau snippets", "duc tham cau snippets", "luc thap cau snippets", "luc tham canh snippets", "luc toan cau snippets", "luc cham cuu 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: (((("luc tham cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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