Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan canh cau snippets" » "van canh cau snippets", "dan cach cau snippets", "dan hanh cau snippets", "dan canh chau snippets", "dan can cau snippets", "dan danh cau 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: (((("dan canh cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan canh cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan canh cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan canh cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.