Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kim minh son snippets" » "kim dinh son snippets", "kim minki son snippets", "kim mi son snippets", "kim tinh son snippets", "kim minh toan snippets", "kim dinh so 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 minh son 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 minh son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kim minh son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kim minh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.