Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chen hoc do snippets" » "khien hoc do snippets", "chung hoc do snippets", "cho hoc do snippets", "chen hoc doi snippets", "chen hoc co snippets", "chen hoc bo 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: (((("chen hoc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chen hoc do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chen hoc do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chen hoc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.