Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trien cua do snippets" » "truyen cua do snippets", "trien nha do snippets", "tri cua do snippets", "trien cua dao snippets", "trien cua bo snippets", "trien cua co 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 cua 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 cua do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trien cua do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trien cua do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.