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