Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"nao cao phan snippets" » "nao co phan snippets", "nao cho phan snippets", "nao cac phan snippets", "na2o cao phan snippets", "bao cao phan snippets", "tao cao phan snippets"

Try widening your search to All Fields.

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