Perhaps you should try some spelling variations:
"thuoc cong 5 snippets" » "truoc cong 5 snippets", "thuoc trong 5 snippets", "thu cong 5 snippets", "thuoc cong _ snippets", "thuoc cong o snippets", "thuoc cong 5 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: (((("thuoc cong 5 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuoc cong 5 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuoc cong 5 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuoc cong 5 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.