Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dung mon tin snippets" » "dung muon tin snippets", "dung mo tin snippets", "dung mot tin snippets", "dung mon tieng snippets", "dung toan tin snippets", "dung dong tin snippets"

Try widening your search to All Fields.

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