Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"diem tinh do snippets" » "diep tinh do snippets", "diem sinh do snippets", "diem hinh do snippets", "diem trinh do snippets", "diem tinh doi snippets", "diem tinh da 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: (((("diem tinh 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: (((("diem tinh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( diem tinh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("diem tinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.