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