Perhaps you should try some spelling variations:
"doan cuong 3 snippets" » "doan phuong 3 snippets", "dai cuong 3 snippets", "van cuong 3 snippets", "doan cuong _ snippets", "doan cuong v snippets", "doan cuong ma snippets", "doan cuong 3 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: (((("doan cuong 3 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan cuong 3 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan cuong 3 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan cuong 3 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.