Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dung thac va snippets" » "dung thuoc va snippets", "dung thang va snippets", "dung thanh va snippets", "dung thuc va snippets", "dung thai va snippets", "dung tac va 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 ("dung thac va snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dung thac va snippets"))) OR ("locating bug core snippets")).
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