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