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