Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tung hai con snippets" » "trung hai con snippets", "dung hai con snippets", "hung hai con snippets", "tung phai con snippets", "tung bai con snippets", "tung hai son 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: (((("tung hai con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tung hai con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tung hai con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tung hai con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.