Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan tham chi snippets" » "van tham chi snippets", "dan than chi snippets", "dan thap chi snippets", "dan pham chi snippets", "dan thai chi snippets", "dan nam chi 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 tham chi 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 tham chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan tham chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan tham chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.