Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cac ke trinh snippets" » "cac ke tinh snippets", "cac kha trinh snippets", "cac ke trang snippets", "cac ket trinh snippets", "tac ke trinh snippets", "cac ky trinh snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("cac ke trinh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac ke trinh snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("cac ke trinh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.