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