Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dung tan rao snippets" » "dung toan rao snippets", "duong tan rao snippets", "dung tai rao snippets", "dung tan trao snippets", "dung tan tao snippets", "dung tan 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 ("dung tan rao 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 tan rao snippets"))) OR ("locating bug core snippets")).
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