Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cum toan do snippets" » "cua toan do snippets", "cuu toan do snippets", "cum trang do snippets", "cum toan ho snippets", "cum toan co snippets", "cum toan du 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: (((("cum toan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cum toan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cum toan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cum toan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.