Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tran quoc co snippets" » "tran quoc code snippets", "trung quoc co snippets", "han quoc co snippets", "tran duc co snippets", "tran quoc cao snippets", "tran quoc cho snippets", "tran duoc co 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: (((("tran quoc co snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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