Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam van loc snippets" » "dao van loc snippets", "nam van loc snippets", "pham van loc snippets", "dam van hoc snippets", "dam van loi snippets", "dam van ngoc 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: (((("dam van loc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dam van loc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam van loc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam van loc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.