Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vuc dong hoc snippets" » "duc dong hoc snippets", "luc dong hoc snippets", "vu dong hoc snippets", "vuc dong co snippets", "vuc dong luc 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: (((("vuc dong 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: (((("vuc dong hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vuc dong hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vuc dong hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.