Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi trinh so snippets" » "tho trinh so snippets", "thi thanh so snippets", "thi minh so snippets", "thi trinh do snippets", "thi trinh co snippets", "thi trinh su 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: (((("thi trinh 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: (((("thi trinh so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi trinh so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi trinh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.