Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham thuc da snippets" » "nham thuc da snippets", "pham thuc da snippets", "tam thuc da snippets", "tham thuc dan snippets", "tham thuc day snippets", "tham thuc dia 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: (((("tham thuc da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tham thuc da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham thuc da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham thuc da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.