Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dao cac tieu snippets" » "dao cach tieu snippets", "dao cac trieu snippets", "dao cac kieu snippets", "do cac tieu snippets", "sao cac tieu snippets", "tao cac tieu snippets"

Try widening your search to All Fields.

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