Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can toan do snippets" » "van toan do snippets", "dan toan do snippets", "manh toan do snippets", "can toan ho snippets", "can toan co snippets", "can 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: (((("can 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: (((("can toan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can toan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can toan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.