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