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