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