Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dieu danh c snippets" » "dieu hanh c snippets", "tieu danh c snippets", "dia danh c snippets", "dieu danh ca snippets", "dieu danh co snippets", "dieu danh o 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: (((("dieu danh c snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dieu danh c snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dieu danh c snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dieu danh c snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.