Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cuu sinh phi snippets" » "cuu tinh phi snippets", "cua sinh phi snippets", "cho sinh phi snippets", "cuu kinh phi snippets", "cuu linh phi snippets", "cuu sinh pho snippets"

Try widening your search to All Fields.

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