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