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