Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc thi loc snippets" » "duc thai loc snippets", "luc thi loc snippets", "duc tho loc snippets", "duc chi loc snippets", "duc thi goc snippets", "duc thi lo 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: (((("duc thi 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: (((("duc thi loc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc thi loc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc thi loc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.