Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngan nhat so snippets" » "ngan nam so snippets", "nam nhat so snippets", "tran nhat so snippets", "ngan thuat so 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: (((("ngan nhat 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: (((("ngan nhat so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngan nhat so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngan nhat so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.