Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dong san lan snippets" » "cong san lan snippets", "dong bang lan snippets", "dong von lan snippets", "dong san luan snippets", "dong san van snippets", "dong sau lan snippets"

Try widening your search to All Fields.

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