Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xuan anh co snippets" » "tuan anh co snippets", "xuan thanh co snippets", "xuan dinh co snippets", "xuan anh so snippets", "xuan danh cho snippets", "xuan nganh co 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: (((("xuan anh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuan anh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan anh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan anh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.