Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phi xa dong snippets" » "phi xa code snippets", "phi ha dong snippets", "phi van dong snippets", "phi lao dong snippets", "phi xay dong snippets", "thi xa dong snippets", "phi va dong 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: (((("phi xa dong snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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