Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao vu hoat snippets" » "cao va hoat snippets", "cao ve hoat snippets", "cao vu hoan snippets", "cao su hoat snippets", "cao tu hoat 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: (((("cao vu hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao vu hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao vu hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao vu hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.