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