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