Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dung hai ten snippets" » "dung tai ten snippets", "dung ha ten snippets", "dung sai ten snippets", "dung hai yen snippets", "dung hai tan snippets", "dung mai ten 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 hai ten 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 hai ten snippets"))) OR ("locating bug core snippets")).
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