Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"than hoc lua snippets" » "toan hoc lua snippets", "thai hoc lua snippets", "than doc lua snippets", "than hoc luan snippets", "than hoc luat snippets", "than hoc cua snippets"

Try widening your search to All Fields.

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