Perhaps you should try some spelling variations:
"hoan thanh java snippets" » "hoang thanh java snippets", "ban thanh java snippets", "van thanh java snippets", "hoan thanh va snippets", "hoan trinh java snippets", "hoan think java snippets"
"python using c snippets" » "python using lc snippets", "python using a snippets", "python using _ 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 c snippets") or ("hoan thanh java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using c snippets") OR ("hoan thanh java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using c snippets ) or ( hoan thanh java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using c snippets") or ("hoan thanh java snippets"))) or ("locating bug code snippets"))*.