Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tren thi cao snippets" » "tren thi code snippets", "trien thi cao snippets", "tran thi cao snippets", "trieu thi cao snippets", "tren thai cao snippets", "tren thi hao snippets", "tren thi bao 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: (((("python using java snippets") or ("tren thi cao snippets"))) or ("locating bug core snippets"))~.
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