Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran manh so snippets" » "tran minh so snippets", "tran thanh so snippets", "tran van so snippets", "tran anh so snippets", "tran mach so snippets", "tran manh ho snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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