Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi cong cua snippets" » "hoc cong cua snippets", "hoa cong cua snippets", "hoi dong cua snippets", "hoi cong cu snippets", "hoi 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: (((("hoi 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: (((("hoi cong cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi cong cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi cong cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.