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