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