Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao giao doc snippets" » "dan giao doc snippets", "bao giao doc snippets", "dai giao doc snippets", "dao giao duc snippets", "dao giam doc snippets", "dao gian doc 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: (((("dao giao doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao giao doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao giao doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao giao doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.