Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lich chau do snippets" » "lich thai do snippets", "minh chau do snippets", "dinh chau do snippets", "lich chau doc snippets", "lich cau do snippets", "lich chau tho 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: (((("lich chau 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: (((("lich chau do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lich chau do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lich chau do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.