Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xuat cac hoc snippets" » "luat cac hoc snippets", "xuat cuc hoc snippets", "xuat vac hoc snippets", "xuat cach hoc snippets", "xuat cac hop snippets", "xuat bac hoc 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: (((("xuat cac hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuat cac hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuat cac hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuat cac hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.