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