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