Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan che ho snippets" » "phan che code snippets", "han che ho snippets", "phap che ho snippets", "phan thi ho snippets", "phan che do snippets", "phan he ho snippets", "phan che khoa snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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