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