Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"ghep hoc lua snippets" » "ghep noi lua snippets", "phap hoc lua snippets", "giup hoc lua snippets", "ghep hoc luan snippets", "ghep hoc luat snippets", "ghep hoc cua snippets"

Try widening your search to All Fields.

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