Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khuc van cu snippets" » "thuc van cu snippets", "chuc van cu snippets", "phuc van cu snippets", "khuc van cau snippets", "khuc van chu snippets", "khuc van cua 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: (((("khuc van 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: (((("khuc van cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khuc van cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khuc van cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.