Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam van que snippets" » "dao van que snippets", "nam van que snippets", "pham van que snippets", "dam van quy snippets", "dam van due snippets", "dam van hue 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 que 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 que snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam van que snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam van que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.