Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan hanh cho snippets" » "dang hanh cho snippets", "dan khanh cho snippets", "dan thanh cho snippets", "dan danh cho snippets", "dan han cho snippets", "dan hang 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: (((("dan hanh 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: (((("dan hanh cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan hanh cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan hanh cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.