Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lon tu cuong snippets" » "lon thu cuong snippets", "lon tu tuong snippets", "lon tu cong snippets", "mon tu cuong snippets", "con tu cuong snippets", "ton tu cuong 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: (((("lon tu cuong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lon tu cuong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lon tu cuong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lon tu cuong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.