Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thu tu doc snippets" » "thu tu code snippets", "thu tuc doc snippets", "tu tu doc snippets", "thu thuy doc snippets", "thu tu duoc snippets", "thu tu hoc snippets", "thu tu do snippets"
"python using java snippets" » "python using data 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: (((("thu tu doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu tu doc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thu tu doc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu tu doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.