Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi thai son snippets" » "khai thac son snippets", "thi thao son snippets", "khi hau son snippets", "khi thai den snippets", "khi thai do snippets", "khi thai hoc 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: (((("khi thai son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi thai son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi thai son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi thai son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.