Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khanh tra du snippets" » "thanh tra du snippets", "khanh trach du snippets", "khanh hoa du snippets", "khanh tra tu snippets", "khanh tran duc snippets", "khanh tran duy 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 tra du 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 tra du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khanh tra du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khanh tra du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.