Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phi sang tac snippets" » "phi san tac snippets", "phap sang tac snippets", "khai sang tac snippets", "phi sang tao snippets", "phi sang tai snippets", "phi sang than 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 ("phi sang tac snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("phi sang tac snippets"))) OR ("locating bug core snippets")).
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