Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuc ta hoc snippets" » "thuc tap hoc snippets", "thuc tai hoc snippets", "thuc va hoc snippets", "thuc tam hoc snippets", "thuc te 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: (((("thuc ta 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: (((("thuc ta hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc ta hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc ta hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.