Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung van o snippets" » "phung van o snippets", "nhung bai o snippets", "nhung cau o snippets", "nhung van do snippets", "nhung van ho snippets", "nhung van co 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: (((("nhung van o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhung van o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung van o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung van o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.