Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cay lanh so snippets" » "cao lan so snippets", "cay lam so snippets", "cay dan so snippets", "cay anh so snippets", "cay lanh co snippets", "cay 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: (((("cay 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: (((("cay lanh so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cay lanh so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cay lanh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.