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