Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho gap cua snippets" » "cho ga cua snippets", "cho dap cua snippets", "cho giao cua snippets", "cho tap cua snippets", "cho ap cua snippets", "cho lap 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: (((("cho gap cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho gap cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho gap cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho gap cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.