Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao hoc do snippets" » "dai hoc do snippets", "dan hoc do snippets", "day hoc do snippets", "dao hoc doi snippets", "dao hoc co snippets", "dao 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: (((("dao 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: (((("dao hoc do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao hoc do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao hoc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.