Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra linh du snippets" » "tran dinh du snippets", "tran minh du snippets", "tran vinh du snippets", "tra dinh du snippets", "tra linh tu snippets", "tra minh duc 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 linh du 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 linh du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra linh du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra linh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.