Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ghep tang do snippets" » "ghep tieng do snippets", "phap tang do snippets", "ghep van do snippets", "ghep trang do snippets", "ghep dang do snippets", "ghep tang o 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: (((("ghep tang 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: (((("ghep tang do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ghep tang do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ghep tang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.