Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao gian hoi snippets" » "cao giai hoi snippets", "cho giang hoi snippets", "dan gian hoi snippets", "cao gian thai snippets", "cao gian ha snippets", "cao gian o 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 gian hoi 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 gian hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao gian hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao gian hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.