Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"rap cac phan snippets" » "rap cac nhan snippets", "rap cao phan snippets", "rap cap phan snippets", "tap cac phan snippets", "gap cac phan snippets", "phap cac phan snippets"

Try widening your search to All Fields.

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