Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat cong cho snippets" » "may cong cho snippets", "mai cong cho snippets", "mot cong cho snippets", "mat dong cho snippets", "mat cong co snippets", "mat rong cho 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 cho 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 cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat cong cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat cong cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.