Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"truc dan hoc snippets" » "thuc dan hoc snippets", "tuc dan hoc snippets", "truc ban hoc snippets", "truc van hoc snippets", "truc dan toc snippets", "truc dai 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: (((("truc dan 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: (((("truc dan hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( truc dan hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truc dan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.