Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat doan do snippets" » "hat dan do snippets", "chan doan do snippets", "thai doan do snippets", "hat doan o snippets", "hat toan do snippets", "hat doanh dao 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: (((("hat doan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hat doan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat doan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat doan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.