Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phi phap thu snippets" » "thi phap thu snippets", "phi phan thu snippets", "phi thap thu snippets", "phi phap thuc snippets", "phi phap tu snippets", "phi phap che snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("phi phap thu 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 phap thu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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