Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thiet ke hoi snippets" » "thiet ke khoi snippets", "thiet le hoi snippets", "thiet me hoi snippets", "thieu ke hoi 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: (((("thiet ke hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thiet ke hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thiet ke hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thiet ke hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.