Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"tran han tap snippets" » "tran hanh tap snippets", "tran hoan tap snippets", "tran nhan tap snippets", "tran han tai snippets", "tran toan tap snippets", "tran nhan tai 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 ("tran han tap snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("tran han tap snippets"))) OR ("locating bug core snippets")).
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