Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam hanh moi snippets" » "nam thanh moi snippets", "nam khanh moi snippets", "nam nhanh moi snippets", "nam hanh noi snippets", "nam hanh mot 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: (((("nam hanh moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam hanh moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam hanh moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam hanh moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.