Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vong doi do snippets" » "trong doi do snippets", "huong doi do snippets", "dung doi do snippets", "vong doi bo snippets", "vong doi co snippets", "vong doi de 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: (((("vong doi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vong doi do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vong doi do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vong doi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.