Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doc sinh cua snippets" » "doc sinh code snippets", "hoc sinh cua snippets", "doc tinh cua snippets", "duc sinh cua snippets", "doc manh cua snippets", "doc dinh cuu snippets", "doc sinh va 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: (((("doc sinh cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc sinh cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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