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