Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thao van con snippets" » "thai van con snippets", "hao van con snippets", "thanh van con snippets", "thao van cong snippets", "thao van bon snippets", "thao van co 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: (((("thao van con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thao van con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thao van con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thao van con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.