Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tren vung he snippets" » "tren duong he snippets", "ben vung he snippets", "tren mang he snippets", "tren dung he snippets", "tren vung re snippets", "tren vung ho 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: (((("tren vung he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tren vung he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tren vung he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tren vung he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.