Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam lanh so snippets" » "lam banh so snippets", "lam linh so snippets", "lap lanh so snippets", "lam anh so snippets", "lam lanh co snippets", "lam lanh dao 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: (((("lam lanh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lam lanh so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam lanh so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam lanh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.