Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhap hai so snippets" » "nhap vai so snippets", "nhap khau so snippets", "nhap nhan so snippets", "nhap dai so snippets", "nhap tai so snippets", "nhap thai son 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: (((("nhap hai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhap hai so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhap hai so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhap hai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.