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