Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"duc san cho snippets" » "duc tan cho snippets", "duc van cho snippets", "dac san cho snippets", "duc sang cho snippets", "duc san chi snippets", "duc san co snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("duc san cho snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))~.
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