Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tu tieng du snippets" » "luc tieng du snippets", "tu tuong du snippets", "tu trong du snippets", "tu tieng duc snippets", "tu tieng dia snippets", "tu tieng _ 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: (((("tu tieng 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: (((("tu tieng du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tu tieng du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu tieng du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.