Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat qua cai snippets" » "nhat cua cai snippets", "nha quan cai snippets", "hat quan cai snippets", "nhat qua hai snippets", "nhat qua cac snippets", "nhat qua ca 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 qua cai 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 qua cai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat qua cai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat qua cai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.