Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan cho cua snippets" » "danh cho cua snippets", "san cho cua snippets", "dac cho cua snippets", "dan cheo cua snippets", "dan co cua snippets", "dan chi 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: (((("dan cho 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: (((("dan cho cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan cho cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan cho cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.