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