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