Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"don toan ho snippets" » "don toan code snippets", "dan toan ho snippets", "mon toan ho snippets", "dien toan ho snippets", "don toan hoc snippets", "don toan khoa snippets", "don toan cao 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: (((("python using java snippets") or ("don toan ho snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("don toan ho snippets"))) OR ("locating bug core snippets")).
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