Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho quoc so snippets" » "cho cuoc so snippets", "cho duoc so snippets", "cao quoc so snippets", "cho quoc son snippets", "cho nuoc so snippets", "cho quoc co 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 quoc so 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 quoc so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho quoc so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho quoc so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.