Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"ghep van cau snippets" » "ghep van code snippets", "nghiep van cau snippets", "ghep tang cau snippets", "he van cau snippets", "ghep van dau snippets", "ghep van hau snippets", "ghep van chat snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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