Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"khac duan he snippets" » "khac duan code snippets", "nhac dan he snippets", "khau luan he snippets", "khai tuan he snippets", "khac quan he snippets", "khac dan he snippets", "khac chuan he 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: (((("khac duan he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khac duan he snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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