Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tim kiem co snippets" » "tiet kiem co snippets", "tim hieu co snippets", "thi kiem co snippets", "tim kien co snippets", "tim hiem cho snippets", "tim kiem mon 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: (((("tim kiem 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: (((("tim kiem co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tim kiem co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tim kiem co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.