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