Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khieu va ca snippets" » "hieu va ca snippets", "khien va ca snippets", "khieu nai ca snippets", "khieu va cac snippets", "khieu va cao snippets", "khieu va cai 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 va ca 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 va ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khieu va ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khieu va ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.