Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"troi cua da snippets" » "tri cua da snippets", "tro cua da snippets", "hoi cua da snippets", "troi cua dan snippets", "troi cua dai snippets", "troi cua dam 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: (((("troi cua da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("troi cua da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( troi cua da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("troi cua da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.