Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao hoat du snippets" » "co hoat du snippets", "cao chat du snippets", "dan hoat du snippets", "cao hoa du snippets", "cao hoai duc snippets", "cao hoat doi 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: (((("cao hoat du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao hoat du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao hoat du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao hoat du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.