Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham tao cau snippets" » "pham tai cau snippets", "pham bao cau snippets", "pham tan cau snippets", "pham tao cu snippets", "pham tao cao snippets", "pham tao sau 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: (((("pham tao cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham tao cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham tao cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham tao cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.