Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"giang ve cao snippets" » "gian ve cao snippets", "giang le cao snippets", "giang vo cao snippets", "giang va cao snippets", "giang ve bao snippets", "giang ve 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: (((("giang ve 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: (((("giang ve cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( giang ve cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("giang ve cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.