Perhaps you should try some spelling variations:
"cau hoc cong snippets" » "cau hoc code snippets", "cau hoc co snippets", "cau cac cong snippets", "cau hoc dung snippets", "cau hoi cong snippets", "cau hoa cong snippets", "cao hoc cong snippets"
"locating bug core snippets" » "locating bug code 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: (((("python using java snippets") or ("cau hoc cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("cau hoc cong snippets"))) OR ("locating bug core snippets")).
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