Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lich su cao snippets" » "lich cu cao snippets", "lich vu cao snippets", "lich su co snippets", "dich su cao snippets", "tich su cao snippets", "linh su cao 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: (((("lich su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lich su cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lich su cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lich su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.