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