Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc ung cua snippets" » "toc ung code snippets", "toc nung cua snippets", "hoc ung cua snippets", "toc muong cua snippets", "toc dung cua snippets", "toc uong cua snippets", "toc cung cua 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: (((("toc ung cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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