Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dua hon trac snippets" » "dua hoi trac snippets", "dua hoan tran snippets", "dua hong tran snippets", "cua hon trac snippets", "lua chon trac snippets", "dua khen trac snippets"

Try widening your search to All Fields.

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