Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"van tay luon snippets" » "van tay huong snippets", "van tay muong snippets", "van tay nguon snippets", "van tai luon snippets", "van tan luon snippets", "van tam luon 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 ("van tay luon snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("van tay luon snippets"))) OR ("locating bug core snippets")).
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