Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mang cao so snippets" » "nang cao so snippets", "lang cao so snippets", "mang cho so snippets", "mang cao son snippets", "mang co so snippets", "mang 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: (((("mang 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: (((("mang cao so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mang cao so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mang cao so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.