Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam thi lon snippets" » "dan thi lon snippets", "dao thi lon snippets", "pham thi lon snippets", "dam thi loan snippets", "dam thit lon snippets", "dam thi lan 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 thi lon 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 thi lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam thi lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam thi lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.