Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra minh chi snippets" » "tran minh chi snippets", "tra linh chi snippets", "tra binh chi snippets", "tra dinh chi snippets", "tra minh chau 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: (((("tra minh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tra minh chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra minh chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra minh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.