Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"anh hoc tran snippets" » "anh hoc tan snippets", "anh hoc tren snippets", "anh boc tran snippets", "sinh hoc tran snippets", "benh hoc tran snippets", "hinh hoc tran 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 ("anh hoc tran snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("anh hoc tran snippets"))) OR ("locating bug core snippets")).
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