Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"khoi lon van snippets" » "khoi dong van snippets", "cho lon van snippets", "hoi long van snippets", "khoi long van snippets", "khoi lo van snippets", "khoi lon va snippets"

Try widening your search to All Fields.

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