Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat su cao snippets" » "nhan su cao snippets", "nhat so cao snippets", "nhat tu cao snippets", "nhat cu cao snippets", "nhat vu cao snippets", "nhat su co 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: (((("nhat 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: (((("nhat su cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat su cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.