Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khao hat cu snippets" » "khao sat cu snippets", "khao ha cu snippets", "khac hau cu snippets", "khao hat cua snippets", "khao bat cu snippets", "khao hat ca 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 hat cu 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 hat cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khao hat cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khao hat cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.