Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu thanh co snippets" » "thu thang co snippets", "tu thanh co snippets", "thuan thanh co snippets", "thu thanh do snippets", "thu thanh ca snippets", "thu thanh ho 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 thanh 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 thanh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu thanh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu thanh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.