Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dao hoc dung snippets" » "dao hoc ung snippets", "dao hoc dan snippets", "dao hoc cong snippets", "dai hoc dung snippets", "dan hoc dung snippets", "day hoc dung snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dao hoc dung snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao hoc dung snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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