Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trien he do snippets" » "thien hue do snippets", "trien ben do snippets", "trien nha do snippets", "trien che do snippets", "trien he co snippets", "trien ke do 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: (((("trien he 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: (((("trien he do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trien he do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trien he do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.