Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat cong hoa snippets" » "may cong hoa snippets", "mai cong hoa snippets", "mot cong hoa snippets", "mat dong hoa snippets", "mat dong hoc snippets", "mat hang hoa 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: (((("mat cong hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mat cong hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat cong hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat cong hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.