Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cho lan lang snippets" » "cho ban lang snippets", "cho lan tang snippets", "cho van lang snippets", "cho lang lang snippets", "cao lan lang snippets", "cho lon lang 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 ("cho lan lang snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("cho lan lang snippets"))) OR ("locating bug core snippets")).
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