Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao day hoc snippets" » "cao dam hoc snippets", "cao dao hoc snippets", "cam day hoc snippets", "cao dai hoc snippets", "cao dan 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 day 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 day hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao day hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao day hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.