Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phi thi hung snippets" » "phi thi huong snippets", "phi thi nhung snippets", "phi thi chung snippets", "phi tai hung snippets", "chi thi hung snippets", "phi phi hung snippets"

Try widening your search to All Fields.

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