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