Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con coi cao snippets" » "con chi cao snippets", "con co cao snippets", "con chim cao snippets", "con choi cho snippets", "con cong cao snippets", "con cuoi cac 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: (((("con coi 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: (((("con coi cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con coi cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con coi cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.