Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kim cua toi snippets" » "kim cuc toi snippets", "diem cua toi snippets", "kich cua toi snippets", "kim cua hoi snippets", "kim cua moi snippets", "kim cua loai 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: (((("kim cua toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kim cua toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kim cua toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kim cua toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.