Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc khoi ke snippets" » "hoc khoa ke snippets", "hoc hoa ke snippets", "hoc noi ke snippets", "hoc khoi ki snippets", "hoc khoi ky snippets", "hoc khoi de 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 ke 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 ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc khoi ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc khoi ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.