Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trot van cau snippets" » "trong van cau snippets", "trot phan cau snippets", "tho van cau snippets", "trot van dau snippets", "trot van hau snippets", "trot van chat 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: (((("trot van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trot van cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trot van cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trot van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.