Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc khoi ca snippets" » "hoc khoa ca snippets", "hoc hoa ca snippets", "hoc noi ca snippets", "hoc khoi can snippets", "hoc khoi cua snippets", "hoc khoi va 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: (((("hoc khoi ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc khoi ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc khoi ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc khoi ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.