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