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