Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"tap toan duc snippets" » "tap doan duc snippets", "tap quan duc snippets", "bai toan duc snippets", "tap tran duc snippets", "tap toan du snippets", "tap ton duc snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("tap toan duc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tap toan duc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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