Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham anh co snippets" » "pham anh co snippets", "ha anh co snippets", "tam anh co snippets", "ham anh so snippets", "ham danh cho snippets", "ham 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: (((("ham 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: (((("ham anh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham anh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham anh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.