Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi canh cao snippets" » "doi hanh cao snippets", "boi canh cao snippets", "do canh cao snippets", "doi canh chau snippets", "doi doanh cao snippets", "doi nang 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 canh 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 canh cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi canh cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi canh cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.