Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao tien do snippets" » "dau tien do snippets", "dao tuyen do snippets", "bao thien do snippets", "dao tien bo snippets", "dao bien do snippets", "dao tien dong 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: (((("dao tien 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: (((("dao tien do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao tien do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao tien do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.