Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam hon hoc snippets" » "nam chon hoc snippets", "tam hon hoc snippets", "nam hoi hoc snippets", "nam hoa hoc snippets", "nam hon hop 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 hon 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: (((("nam hon hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam hon hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam hon hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.