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