Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat ca hoi snippets" » "nhat cua hoi snippets", "nhap ca hoi snippets", "hat ca hoi snippets", "nhat cau hoi snippets", "nhat xa hoi 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: (((("nhat ca hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhat ca hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat ca hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat ca hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.