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