Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"danh han tap snippets" » "danh nhan tap snippets", "anh han tap snippets", "danh hau tap snippets", "danh han tai snippets", "danh toan tap snippets", "danh nhan tai snippets"

Try widening your search to All Fields.

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