Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"som thi luan snippets" » "som thi lan snippets", "som thi xuan snippets", "som thi loan snippets", "some thi luan snippets", "som thi luan slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("som thi luan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("som thi luan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( som thi luan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("som thi luan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.