Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri cao hon snippets" » "tri co hon snippets", "tai cao hon snippets", "tri cac hon snippets", "tri cao son snippets", "tri cao hoc snippets", "tri ca hon 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: (((("tri cao hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tri cao hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri cao hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri cao hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.