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