Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi chay cao snippets" » "doi cay cao snippets", "doi cua cao snippets", "doi chi cao snippets", "doi chat cao snippets", "doi nha cao 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: (((("doi chay cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi chay cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi chay cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi chay cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.