Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khao hay cac snippets" » "khao ha cac snippets", "khao sat cac snippets", "khac hau cac snippets", "khao tay cac snippets", "khao vay cac snippets", "khao phan cac 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: (((("khao hay cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khao hay cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khao hay cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khao hay cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.