Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao hoach do snippets" » "cao hoc do snippets", "cao hoat do snippets", "cao doanh do snippets", "cao hoach de snippets", "cao hoach du snippets", "cao hoach hoi 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 hoach 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: (((("cao hoach do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao hoach do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao hoach do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.