Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc gia cua snippets" » "luoc gia cua snippets", "duc gia cua snippets", "quoc gia cua snippets", "luc gian cua snippets", "luc giau cua snippets", "luc gia cuc 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: (((("luc gia 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: (((("luc gia cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc gia cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc gia cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.