Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"tao van hang snippets" » "tao van khang snippets", "tao van hoang snippets", "tao van thang snippets", "thao van hang snippets", "tao va hang snippets", "dao van hang snippets"

Try widening your search to All Fields.

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