Perhaps you should try some spelling variations:
"xa dong chan snippets" » "xa dong chuan snippets", "xa jong chan snippets", "xa dong chen snippets", "ha dong chan snippets", "van dong chan snippets", "lao dong chan snippets"
"python using raw snippets" » "python using real snippets", "python using a snippets", "python using low snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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