Perhaps you should try some spelling variations:
"cong bang core snippets" » "cuong bang core snippets", "dong bang core snippets", "hong bang core snippets", "cong bang cong snippets", "cong bang che snippets", "cong bang cot snippets"
"cong bang cac snippets" » "cuong bang cac snippets", "dong bang cac snippets", "hong bang cac snippets", "cong nang cao snippets", "cong hang ca snippets", "cong dung cac snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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