Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"may cac nhan snippets" » "may ca nhan snippets", "may cac nha snippets", "may cam nhan snippets", "may cat nhan snippets", "may mac nhan snippets", "tay cac nhan 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 ("may cac nhan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("may cac nhan snippets"))) OR ("locating bug core snippets")).
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