Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu trinh co snippets" » "thi trinh co snippets", "tho trinh co snippets", "thu tinh co snippets", "thu trinh do snippets", "thu trinh cong snippets", "thu trinh hoa 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: (((("thu trinh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu trinh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu trinh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu trinh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.