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