Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao quoc doi snippets" » "cac quoc doi snippets", "cao thuoc doi snippets", "han quoc doi snippets", "cao cuoc doi snippets", "cao quoc hoi snippets", "cao luoc doi 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: (((("cao quoc doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao quoc doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao quoc doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao quoc doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.