Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tho dan cao snippets" » "thuc dan cao snippets", "choi dan cao snippets", "tho dan ca snippets", "tho dam cao snippets", "tho dan bao 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: (((("tho dan 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: (((("tho dan cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tho dan cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tho dan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.