Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan tuoi cu snippets" » "doan thi cu snippets", "tuan tuoi cu snippets", "doan tuan cu snippets", "doan cuoi cua snippets", "doan troi cua snippets", "doan tuoi cam 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: (((("doan tuoi cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan tuoi cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan tuoi cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan tuoi cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.