Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat minh son snippets" » "mai minh son snippets", "mot minh son snippets", "nhat minh son snippets", "mat tinh son snippets", "mat minh toan snippets", "mat dinh so 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 minh son 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 minh son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat minh son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat minh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.